California ? An intruder dressed in black and wearing a motorcycle helmet barged into a Southern California beach home and stabbed a pregnant woman and her husband to death as their two children were in other rooms, authorities said Thursday.

The two children were not injured in the attack late Tuesday. The 9-year-old boy ran to another part of the house after he first saw the intruder, and later found his parents’ bodies. His 11-year-old sister was asleep in another room, authorities said.

Davina Husted, 42, was in the kitchen, the father, Brock Husted, 42, was in a bedroom, and the boy was watching television when the intruder entered the expensive house in unincorporated Faria Beach through a sliding-glass door, sheriff’s Capt. Ross Bonfiglio said.

The parents’ bodies were found in the back of the one-story Ventura County home, he said. Sheriff’s Capt. Bruce Norris said Davina Husted was four to five months pregnant. No arrests have been made.