A man shot and killed his wife who was allegedly suffering from dementia and then walked into a North Hills convalescent home Wednesday and killed his 58-year-old sister as she lay in a vegetative state, authorities said.
After the second shooting, the man put down his gun and waited for officers to arrive, police said.
The 60-year-old man was not immediately identified, nor were the victims.
Los Angeles Police Lt. Paul Vernon said the man walked into Country Villa Sheraton Nursing Rehabilitation Hospital in the 9600 block of Sepulveda Boulevard about 10 a.m. and "shot his sister once in the head."
The sister had been in a vegetative state for five years after suffering a heart attack, he added.
During a subsequent investigation, Vernon said detectives learned the man shot and killed his wife in Canyon Country before coming to the hospital.
"According to family, the wife was suffering from dementia," Vernon said. "The sister was pronounced dead in the hospital bed," Vernon said.
Sheriff's department officials confirmed homicide detectives are investigating the death of a woman in Canyon Country.