Roxann Felicia Acosta, 28

Roxann Acosta, a 28-year-old Latina, was fatally shot Sunday, Aug. 6, in the 1200 block of West Victoria Avenue in Montebello, according to Los Angeles County coroner’s records. 

Montebello police responded about 10 p.m. to a call about shots fired in the area, according to Sgt. Marc Marty. Officers found Acosta at a residence with a gunshot wound. She was pronounced dead at the scene at 10:22 p.m., according to coroner’s records. 

Detectives think Acosta was killed by her husband, Christopher Michael Diaz, 26, according to Marty. Acosta and Diaz were estranged but had spent the day together before ending up at Diaz’s mother’s house in Montebello, Marty said.

The two had an argument, and witnesses heard gunshots, Marty said. Diaz’s mother was in the house but in another room; other people also were in the home, Marty said.

Diaz fled, and no weapons were found at the scene, Marty said. On Monday, police arrested a woman in connection with the case on suspicion of aiding and abetting, Marty said, but he would not release her name.

At a vigil on Aug. 7, family members told the San Gabriel Valley Tribune that Acosta had three children and was pregnant with a fourth.

"I always feared him. That's why he wasn't welcome into the family," Alicia Acosta, the victim’s mother, told Fox 11 News. "I know he's out there; he's out there somewhere watching.”

Contact the Homicide Report. Follow @latimeshomicide on Twitter.