Rayshawn Laster pleaded guilty Thursday to first-degree murder in the Dec. 30 shooting death of his mother in her Security home.

He was immediately sentenced to life in prison, with no possibility of parole.

Brenda Laster-Taylor, 49, was shot in the head just before 8 p.m. and was pronounced dead soon afterward at a hospital.

Laster, 27, had threatened his mother earlier on Dec. 30 and then returned with a handgun and shot her as she was in her bedroom chatting on a cell phone, according to court documents.

After the shooting, Laster sent a text message to a neighbor that said “i killed brenda.”  He also posted information about the incident on his Facebook page that night as deputies hunted for him.

About an hour after the shooting, he wrote: “Im sorry for nothing. My journey has come to an end.”

El Paso County sheriff’s deputies had been at the home hours before the shooting after Laster-Taylor reported that her son had shoved her and choked her. Family members said he threatened to come back and kill his mother and anyone else who was in the way, according to court documents.

He had left when deputies arrived to investigate the threats.