TOWSON -- A 16-year-old boy was denied bail Thursday after he was charged with beating his mother to death with a baseball bat, then using the bat to assault his father. The teen was also ordered to have no contact with his father, Baltimore station WBAL reported.

Baltimore County police spokesman Bill Toohey said Lewin Carlton Powell III was charged as an adult with first-degree murder in the death of his mother, Donna Rosemarie Campbell-Powell, 39, who was found dead Wednesday morning by police and co-workers at her home in the 1600 block of Alston Road in the Thornleigh community. The teen was also charged with attempted murder in the attack on his father.

Carlton confessed to police that he had killed his mother after they got into an argument Tuesday afternoon about his performance at McDonogh School, Toohey said.

"That escalated to a fight where he ended up hitting his mother, physically with his hand, and then beating her over the head with a baseball bat until he killed her," Toohey said.

Officials said they found Campbell-Powell after co-workers called police Wednesday when she didn't show up for work.

"A couple of her co-workers came. They found the door locked and they couldn't get in so they called police. Officers came, went in and found the victim inside dead," Toohey said.

Powell hid his mother's body in the garage, Toohey said. Powell's father, who works a night shift, came home around midnight and fell asleep on a sofa, unaware of the violence that had occurred Tuesday, the spokesman said.

The elder Powell woke up Wednesday morning when his son started beating him about the head with a baseball bat, Toohey said. During the struggle that ensued, the younger Powell admitted to killing his mother, the spokesman said.

The elder Powell was able to talk the youth out of killing him, according to police. He stalled his son and was able to get out of the house when police arrived around 10 a.m. Wednesday.

Officials said that police and the co-workers got to the home and walked around the house to find the father and son in the yard.

The elder Powell was "bleeding from significant wounds to the head," and told police, "Thank God you're here; my son killed my wife," according to the documents.

The elder Powell was taken to Sinai Hospital; the younger Powell was taken to police headquarters were he is being held without bail.

Lewin Carlton Powell III attends McDonogh School, a coeducational day and boarding school in Owings Mills, and was in good standing there. It has about 1,300 students from kindergarten through 12th grade.

School spokeswoman Lynn McKain said school officials were not aware he was at risk. McKain said Powell was taking a difficult course load that included some honors and advanced placement classes.

Powell had previously played baseball, but was not on the team this season.