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Suspect in officer’s slaying was arrested once a year over last 4 years

Thomas Latanowich. Yarmouth Police Dept.

Except for the time he was serving a state prison sentence between 2010 and 2014, Thomas M. Latanowich has been arrested at least once a year by police on Cape Cod for the last four years, resulting in more than 20 cases with his name on them in Barnstable District Court alone.

A Globe review of the cases showed that the man accused of shooting Yarmouth police Officer Sean Gannon to death, as the officer tried to arrest him on a warrant charging him with a probation violation, shows that he was twice found not guilty by judges, once had charges dropped when the victim invoked her Fifth Amendment right against self-incrimination, and had most charges dismissed.


Below is a summary of the cases in Barnstable District Court and Barnstable Superior Court, where he pleaded guilty to gun and drug charges in 2010 and was sentenced to serve five years in prison, a sentence he completed in 2014, records show.

John R. Ellement of the Globe Staff contributed to this report. Travis Andersen can be reached at Follow him on Twitter @TAGlobe.