A 16-year-old girl accused of drowning an infant boy in a toilet and throwing the body in the trash in Washington state has been charged with murder.

Lauryn Louise Last, of Port Angeles, was charged as an adult with first-degree murder Wednesday in the death of the infant believed to be her son. Last moved to Port Angeles from Pueblo, Colo., in October.

Last's arraignment is scheduled for Friday. She faces up to life in prison if convicted.

Last's attorney, Suzanne Hayden of the Clallam County public defender's office, did not immediately return a phone call Wednesday.

The baby's body was found Monday by authorities combing through 60 tons of trash at a dump site near Tacoma.

Last's father is charged with concealing a birth, a gross misdemeanor.