NORTH RICHLAND HILLS, Texas — A surgeon has been identified as the 36-year-old man police believe fatally shot his two young children before killing himself in the family’s North Texas home.

The Fort Worth Star-Telegram reports that officials Tuesday identified the man as Dr. Christopher Dawson. Police are calling the deaths Saturday in North Richland Hills a murder-suicide.

The Tarrant County medical examiner’s office says Dawson fatally shot himself. The deaths of 9-year-old Luke Dawson and 5-year-old Aubrey Dawson were ruled homicides. Both children died from gunshot wounds.

Baylor Scott & White Medical Center-Waxahachie records show Christopher Dawson was employed there from Sept. 4 to Oct. 20. Hospital officials didn’t comment on why Dawson left.

Police have said there had been no previous calls from the house.

The children’s mother was home but wasn’t injured.