206 Cases Solved. Advancing justice for missing persons, unsolved homicides, unidentified and unclaimed remains.
Case Description
Any updates on this case?
On a spring afternoon in 2018, a white Caucasian male named Sean Gannon, a 32-year-old K-9 officer with the Yarmouth Police Department, was part of a team of officers serving an arrest warrant in Marstons Mills, Massachusetts. The date was April 12, and the subject of the warrant was a career criminal named Thomas Latanowich, who was wanted for a probation violation. The officers descended on the Blueberry Lane residence, unaware of the tragedy that would soon unfold.
Inside the house, Of ...Read More
Inside the house, Of ...Read More
Links to Additional Sources (6)
See any mistakes?Victim Details
Sean Gannon
Male
White / Caucasian
Marstons Mills
MA
2018-04-12
32
Sean
Gannon
11/08/2025






