Riverview, Fla. -- A son is under arrest in the death of his mother on her birthday, and the Hillsborough County sheriff reports that a bat and knife were used in the attack.

Joshua Leon Carmona, 18, killed his mother, according to the sheriff's office. He was booked early Tuesday and is charged with first-degree murder. He is being held without bond at the Falkenburg Road jail.

Tahirih Lua D'Angelo, 39, was found in her home with upper body trauma. The sheriff's office was called about 4 p.m. Monday.

Detectives are asking anyone with information to call the sheriff's office at 813-247-8200.