The bill, filed by Rep. Shaunna O'Connell, would give the state the option of seeking the death penalty for anyone older than 18 who kills a police officer.
Yarmouth Police Chief Frank Frederickson spoke alongside the parents of slain Yarmouth Police Sergeant Sean Gannon at New Bedford's National Night Out on Tuesday.
Authorities have confirmed the deaths of 42-year-old Weymouth Police Officer Michael Chesna and an unidentified woman. Chesna was brought to South Shore Hospital where he was pronounced dead.
Authorities say an on duty officer in Weymouth was shot Sunday morning and describe the officer's injuries as "life-threatening. The unidentified officer is being treated at South Shore Hospital.