Authorities now believe a Martinez baby was intentionally suffocated by his mother’s boyfriend this week and have filed murder charges in the death of the 6-month-old boy.

Lexis Russell and boyfriend Jacob Harris are both charged with murder in connection with the death of 6-month-old Bentley Reeves, sheriff’s Capt. Steve Morris said.

Authorities believe Harris suffocated the baby because he was tired of hearing the child screaming and crying.

The couple are already in jail on charges related to the meth, marijuana and spice that was found in the couple’s trailer at 4222 Wheeler Road, authorities said.

Russell initially told police she woke up at 4:30 a.m. Wednesday and found the baby wasn’t breathing. She screamed and woke up the boyfriend, who tried CPR unsuccessfully.