Police are investigating the brother of Ravens defensive lineman Calais Campbell in the death of their mother, who was found dead in the brother’s Atlanta home Tuesday. Ciarre Campbell, 41, was arrested and booked into Fulton County Jail early Wednesday morning, according to public records. He faces charges of murder, aggravated assault and gun possession. Police found Nateal Campbell, 71, during a welfare check at Ciarre Campbell’s Buckhead home on Tuesday afternoon.