Hero Down: Yarmouth Police Officer Sean Gannon Murdered Serving Warrant

A Yarmouth police officer was killed and his K9 partner was wounded when a suspect opened fire during a warrant service.

Barnstable, MA – Yarmouth Police Officer Sean Gannon was fatally shot while serving a warrant on Thursday.

Police said that Officer Gannon and his K9 partner Nero were trying to serve a warrant at a home on Blueberry Lane in the Marstons Mills section of Barnstable at about 3:30 pm on April 12.

Time reported that they were searching for the suspect in the attic of the house when he opened fire on them.

Officer Gannon, 32, was fatally shot in the head. The Massachusetts State Police (MSP) said that Officer Gannon’s K9 partner was also seriously injured, the Boston Herald reported.

The suspect barricaded himself inside the residence immediately after he shot Officer Gannon, and then a gunfight ensued with police, Time reported. A black, armored tactical vehicle was used to gain entry to the home, and take the suspect into custody.

Officer Gannon was transported by ambulance to Cape Cod Hospital in Hyannis where he died.

K9 Nero was taken for emergency veterinary care. His condition was unknown, Time reported.

The Cape and Islands District Attorney’s office identified the shooter as 29-year-old Thomas Latanowich of Somerville, a career criminal with at least 111 charges already on his record, the Somerville Patch reported.

Yarmouth Police Lieutenant Steven Xiarhos called him a "notorious and violent criminal" when he was arrested for stabbing a man who had just gotten out of prison in December of 2017.

Assistant District Attorney Tara L. Miltmore said in a statement that Latanowich will be charged with murder when he is arraigned Friday at First District Court in Barnstable.

Massachusetts Governor Charlie Baker extended his condolences on Thursday night.

“I am heartbroken to learn of the passing of Officer Gannon and my thoughts and prayers are with his family, loved ones and the Yarmouth Police Department after this tragic loss,” Baker said in a statement, according to the Boston Globe.

“The Commonwealth is blessed to have courageous men and women who put their lives on the line to protect our communities every day," the governor wrote.

As news of Officer Gannon’s murder spread, police departments and supporters took to social media to express their condolences and celebrate the life of the fallen hero.

"With deep sorrow and heavy hearts the Yarmouth Police Department reports the loss of Officer Sean Gannon. Officer Sean Gannon was killed in the line of duty today," the Yarmouth Police Department posted on their Facebook page.

MSP tweeted its condolences along with wishes for Officer Gannon’s K9 partner’s recovery.

Officer Gannon joined the Yarmouth Police Department (YPD) in December of 2010, and became the department’s first full-time K9 handler one year later, WCVB reported.

He had previously served on the Stonehill College Police Department and the Nantucket Police Department, according to the Officer Down Memorial Page.

Officer Gannon's wresting partner attended the procession that took his fallen's friend's body from the hospital, and held up American flags with his young daughter as the officer's body passed by them, the Boston Globe reported.

“I’m really glad to see so many officers supporting my friend,” Robert Horne said. “I felt that it was important that I bring my daughter out here so she could see how important his life was. To me and so many other people.”

Our thoughts and prayers are with the family of Yarmouth Police Officer Sean Gannon, both blood and blue. Thank you for your service.

Officer Sean Gannon, your life mattered.

Comments (19)
No. 1-19
Buzz17
Buzz17

Our family just finished praying for this officer! Heartbreaking to learn he died! So sorry to hear his K9 was badly wounded; we didn't know that until now. Will continue to pray for Officer Gannon's family & friends, blood & blue. No words can express the depth of our sorrow for them for what they're suffering. Please know that we're with you in our thoughts & prayers.

AnnykaV
AnnykaV

What the FUCK was this guy doing out?

Just-My-Thoughts
Just-My-Thoughts

Yes, what was he doing out? 111 arrests and he's out in the community? These judges need to be held accountable for allowing vicious men and women out of jail/prison. They're not capable of being rehabilitated. They need to stay in prison and NEVER let out. Shame on them............ My thoughts and prayers for this officers family and friends....... This is so very sad.

Dick Elliott
Dick Elliott

Rest in peace brother. Thank you for your service. My condolences to your family and Department. My prayers to your K-9 partner for a full recovery.

VicG
VicG

Condolences to family and department. Rest in Peace Brother...

CloserFocus
CloserFocus

This was NEEDLESS!

CloserFocus
CloserFocus

This SOB should have NEVER been OUTside a maximum security prison, for YEARS, now! His violent history is FILLED with illegal guns, drugs & horrible assaults!!! Judges need to go thru an Election process, so they can be FIRED for not doing their jobs!!!! And the PD on Cape needs to ask themselves WHY they sent just 3 over there to serve a parole warrant to begin with. The armored SWAT TEAM should have been the ones serving such a Violent CREEP! NOT a normal situation here! A KNOWN 100+ History of VIOLENCE against others & WEAPONS CHARGES, AGAIN & AGAIN!!!! This is a total disgrace. NO thought put into this tragedy, to AVOID this needless death! We are so ANGRY here, amid our sadness. There is something very WRONG with their decision to proceed as they did. Including the timing. When many children were being dropped off from school by bus & parents walking them home, in this usually quiet, sleepy neighborhood. NO ONE even knew this Multiple FELON was living among them! A huge amount of blood is just inside the front door with the 2 marker cards used for bullets. Which goes along with the neighbor across the street who just got in with her young son...saying she saw them going up the ramp to serve the warrant. And very soon after, she heard what sounded like 2 shots that rang out. Doesn’t jive with them having any chance to search the home at all. That blood does not belong to the K9. He too then, would have been dead. Too much blood for that dog. Officer Gannon never had a chance. The KILLER was AGAIN ARMED & Ready to KILL!

CloserFocus
CloserFocus

Sincere Condolences to his wife of only 18 mos, his family, both blood & Blue & His K9 partner, Officer Nero. May his death not be in vain. May they Change the way they handle Violent Career Criminals.

CloserFocus
CloserFocus

Exactly. MUCH SHAME on them for not handling this Known Violent Felon properly. Now the court & the dept has to live with this head shaking tragedy. The court, for allowing this POS out, time after 100+ time’s! The Dept, for not using more protective force to serve this parole warrant. This SOB should have been served by a SWAT Team! How could they not know this could turn into a major confrontation?! Shame on whoever sent them out, unprepared to handle this tragic situation. SMH

Missy64
Missy64

So sorry to hear of such a senseless death. RIP for a job well done. Prayers for your K-9 and for your wife. May God comfort your wife of such a short time....so sad.

gfc1963
gfc1963

No wonder criminals laugh at the law! Over a hundred convictions and he is out of jail?? Someone like that should never be out of jail for the rest of his life. And the cops should have shot him dead when the entered his house, never mind take him into custody.

SueCoop
SueCoop

Wish they would have filled that attic full of holes and brought him out in a body bag. That would save the tax payers a trial and to clothe, feed, and house this POS the rest of his miserable life. What a waste of oxygen!

BLM-NZ
BLM-NZ

RIP Officer

K.L.TuckerStephens
K.L.TuckerStephens

I'm so distraught over this and others dying in the line of duty. This has got to stop! May God provide comfort for his family and friends. So sorry. Rest in Peace.

CloserFocus
CloserFocus

Update on K9 Nero, Sgt Sean Gannon’s partner. He was released from the Vet hospital early Tuesday eve, day of the funeral. He is expected to make a full recovery, despite the bullet still in his body. A retired K9 training officer was with Him the whole time. He was taken to his home in Sgt Gannon’s & his cruiser. It looks like he will go to his family, where he lived with 2 rescue dogs that the Gannon’s also had in their fur family. Sgt Gannon loves animals, especially dogs.

CloserFocus
CloserFocus

The POS murderer had 125 Priors on record & is how he is referred to. Not by name. Just 125. Now, 126 with Sgt Gannon’s murder. These career Felons need to be put behind bars for LIFE after strike 2. The hell w/even 3 strikes, that 1 state has. Which is still better than most. It needs to be NATIONWIDE. Keep these violent Felons OFF ALL AMERICAN STREETS FOR GOOD!

CloserFocus
CloserFocus
LOVE THE PD
LOVE THE PD

We here On Cape Cod are very upset about Officer Gannon's MURDER. I personally am Outraged over this senseless violence. I heard from a customer while at work moments after it happened. I saw alot of sadness, anger & confusion about the incident after for over a week. I also saw how those of us on Cape Cod have pulled toger and shown our Heros that we DO HAVE THEIR SIX!. THANK YOU OFFICER GANNON NERO & M
rs. Gannon.

Burgers Allday
Burgers Allday

This story makes no sense. How were the officers in the attic before the shooting, but then barricaded outside of the house after the shooting. Hope it wasn't friendly fire, because that would seriously complicate the criminal case.