When 80-year-old Tom Greer was attacked by intruders at his home, he fought back. When he got his gun and fired at them, they ran.
One of his attackers, a woman, shouted, "I'm pregnant!" He shot her twice, killing her.
The district attorney will decide Friday whether Greer will face criminal charges for his actions.
Long Beach Police Chief Jim McDonnell said Greer walked into his house Tuesday to find suspects Andrea Miller, 26, and Gus Adams, 28, ransacking it. According to McDonnell, Greer said this was the fourth time his house has been burglarized.
Police say the couple beat and threw the elderly man to the ground, causing him to suffer a broken collarbone, cuts and bruises.
Although injured, Greer managed to grab his gun and fire at the suspects, causing them to flee through the garage and into the alley, police said.
In an interview with non-CNN affiliate KNBC, Greer said that as the suspects ran into the alley, Miller yelled, "'Don't shoot me, I'm pregnant! I'm going to have a baby!' and I shot her anyway."
According to McDonnell, Miller died in the alley.
In a press conference, McDonnell said the coroner will make the final determination of whether Miller was pregnant, but said it "wasn't obvious" if she was.
When asked by KNBC how he felt about the incident, Greer responded that he had no regrets.
"I had to do what I had to do."
The male suspect fled the scene, according to Greer. Adams was later arrested and charged with residential robbery and felony murder in Miller's death. He is currently being held on $1.25 million bond.