An autopsy is being conducted to confirm Amy Walston's cause of death.
The couple's 4-year-old daughter was staying with relatives on Sunday and was not a witness.
There is no word on a possible motive.
CNS contributed to this report.
Police: Man kills wife, self in Long Beach
LONG BEACH, Calif. Investigators said they believe Jason Walston, 38, killed his wife, Amy Walston, 35, at their home on Lees Avenue on Sunday. Police believe he then went to El Dorado Park where he shot himself.
