A man convicted of killing his girlfriend and her two children in Garland two years ago has been sentenced to life in prison.

Keith Coleman was sentenced Thursday at the Penobscot Judicial Center.

In Dec. 2014, Coleman strangled Christina Sargent and her two children, 8-year-old Destiny Sargent and 10-year-old Duwayne Coke.

Coleman also received a 20-year sentence for sexually assaulting the girl and was ordered to pay more than $15,000 in restitution for funeral costs.

He was arrested in Bucksport the day after the killings and has been held without bail since then.

The detectives who interviewed Coleman the day he was arrested said Coleman confessed to killing the woman and her children.