Monica Ann Dominguez, 52

 Monica Ann Dominguez, a 52-year-old Latina, was fatally shot on Wednesday, Feb. 13, in the 200 block of East Center Street in Covina, according to Los Angeles County Medical Examiner-Coroner's records. 

Dominguez and her husband, Michael Rivera, 62, were arguing inside their bedroom with the door locked when their grandchildren heard gunshots around 4:45 p.m., said Covina Police Sgt. David Rodriguez. 

"The oldest juvenile, a teenager, said he heard the arguing, then the gunshots," Rodriguez said. "Then they smelled smoke and didn't hear anymore arguing, so they went to a neighbor's house to call the police."

When officers arrived, they found Dominguez and her husband in the bedroom, dead from gunshot wounds, Rodriguez said. 

Dominguez was pronounced dead at the scene at 5:11 p.m., according to coroner's records. The cause of death was listed as a gunshot wound to the head. 

Rivera was also pronounced dead at the scene at 5:12 p.m., according to coroner's records. His death was ruled a suicide by a gunshot to the head. 

The couple were the guardians for their three grandchildren and had lived in the apartment for about 18 months, Rodriguez said. Police had been called to the apartment twice in November 2018 to deal with disturbances involving loud arguing, he said. 

The children (the teen and two of elementary-school age) were taken in by other relatives, Rodriguez said. 

Anyone with information on the matter is asked to call Det.Tim Statler at (626) 384-5622. Those wishing to remain anonymous should call Crime Stoppers at (800) 222-8477.