--- description: A Yarmouth police officer, Sean Gannon, was fatally shot in Barnstable, Mass. serving a warrant to a suspect with a long criminal history. title: Cape Cod Police Officer Shot and Killed While Serving a Warrant to Dangerous Suspect image: https://static.time.com/v3/assets/bltea6093859af6183b/blt25e30e2d0855e400/69892d8e929fadc7e9bf041b/cape-cod-police-officer-shot.jpg?branch=production&width=3840&quality=75&auto=webp&crop=16:9 ---  * [U.S.](/section/us/) ## U.S. Update your preferences in [Account Settings](/account/preferences/) Close * [Crime](/tag/crime/) ## Crime Update your preferences in [Account Settings](/account/preferences/) Close # Cape Cod Police Officer Shot and Killed While Serving a Warrant to Dangerous Suspect by [Alix Langone](/author/alix-langone/) ## Alix Langone Update your preferences in [Account Settings](/account/preferences/) Close Apr 13, 2018 12:43 AM CUT  Sujata Jana - EyeEm/Getty Images by [Alix Langone](/author/alix-langone/) ## Alix Langone Update your preferences in [Account Settings](/account/preferences/) Close Apr 13, 2018 12:43 AM CUT A Yarmouth police officer who was shot in the head while serving a warrant in the town of Barnstable, Mass. has died from his injuries at Cape Cod Hospital. The officer, Sean Gannon, was shot around 3:30 p.m. in the Marston Mills neighborhood of the Massachusetts town, [according to The Cape Cod _Times_](http://www.capecodtimes.com/news11/20180412/police-officer-shot-in-marstons-mills-dies "undefined"). Gannon was attempting to serve the suspect a warrant when he was shot, and was apparently searching the home’s attic to find the suspect when it happened, [according to News 7 Boston](https://whdh.com/news/state-police-suspect-who-shot-cop-in-marstons-mills-in-custody/ "undefined"). > [](https://twitter.com/MAPOLICECHIEFS/status/984576890076790784) The suspect, who has a criminal history, is now in custody, but a shootout with police ensued around 5:45 p.m. after the suspect fatally shot Gannon, [CBS 5 reported](http://www.wcvb.com/article/officer-shot-serving-warrant-in-marstons-mills-section-of-barnstable-state-police-say/19758150 "undefined"). The search warrant that was being executed was a “multi-agency warrant search,”CBS 5 said. The Cape Cod _Times_ reported that in addition to a SWAT team showing up, ATF agents also arrived on the scene. A police perimeter was set up around the home, and the suspect was barricaded in his home before being successfully captured after a standoff, CBS 5 reported. The neighborhood was evacuated and police were handing out bullet proof vests in case of additional gun fire, the Cape Cod _Times_ reported. Gannon’s K9 unit police dog was also shot and seriously wounded. The animal’s current condition is not known, [according to the Boston Globe](https://www.bostonglobe.com/metro/2018/04/12/police-officer-shot-barnstable-while-serving-warrant/iq3qrVGXIiMlzQsSHAWHWM/story.html "undefined"). ```json [{"@context":"https://schema.org","@type":"NewsArticle","@id":"https://time.com/5238792/yarmouth-police-officer-shot-killed-warrant-cape-cod/","mainEntityOfPage":{"@type":"WebPage","@id":"https://time.com/5238792/yarmouth-police-officer-shot-killed-warrant-cape-cod/"},"headline":"Cape Cod Police Officer Shot and Killed While Serving a Warrant to Dangerous Suspect","datePublished":"2018-04-13T00:43:41.000Z","dateModified":"2026-02-23T19:57:39.184Z","description":"His K9 unit police dog was also shot and seriously wounded","url":"https://time.com/5238792/yarmouth-police-officer-shot-killed-warrant-cape-cod/","keywords":["Crime","U.S.","Massachusetts","onetime"],"thumbnailUrl":"https://static.time.com/v3/assets/bltea6093859af6183b/blt25e30e2d0855e400/69892d8e929fadc7e9bf041b/cape-cod-police-officer-shot.jpg?branch=production&width=1200&quality=75&auto=webp&crop=1200:675&height=675","author":[{"@type":"Person","name":"Alix Langone","jobTitle":null,"url":"https://time.com/author/alix-langone/"}],"articleSection":"U.S.","image":[{"@type":"ImageObject","url":"https://static.time.com/v3/assets/bltea6093859af6183b/blt25e30e2d0855e400/69892d8e929fadc7e9bf041b/cape-cod-police-officer-shot.jpg?branch=production&width=1200&quality=75&auto=webp&crop=1200:675&height=675","width":1200,"height":675,"headline":"cape-cod-police-officer-shot.jpg","caption":"Close-Up Of Cordon Tape At Park","creditText":"Sujata Jana - EyeEm/Getty Images","representativeOfPage":true}],"publisher":{"@type":"Organization","name":"Time","url":"https://time.com/","logo":{"@type":"ImageObject","url":"https://time.com/images/logo.png","width":528,"height":156},"foundingDate":"March 3, 1923","sameAs":["https://www.facebook.com/time","https://www.instagram.com/time/?hl=en","https://twitter.com/time","https://www.pinterest.com/timemagazine"]}},{"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"item":{"@id":"/section/us/","name":"U.S."}},{"@type":"ListItem","position":2,"item":{"@id":"/tag/crime/","name":"Crime"}},{"@type":"ListItem","position":3,"item":{"@id":"https://time.com/5238792/yarmouth-police-officer-shot-killed-warrant-cape-cod/","name":"Cape Cod Police Officer Shot and Killed While Serving a Warrant to Dangerous Suspect"}}]}] ```