MESA, AZ (3TV/CBS 5) –A man is in custody after a shooting ended with a dead husband and wife at a Mesa apartment complex last week.

Police say Johnel Trinidad, 44, is accused of killing the woman he was having an affair with and her husband in a shootout with their son. On November 1, officers were called to Silver Creek Apartments near Power Road and Main Street following reports of a shooting. When officers arrived, they found Ronnie Lazalde, 48, and his wife, Natishia Lazalde, 41, shot under a stairwell at the resort. The Lazaldes were taken to hospital but later died.

Court documents say officers found Trinidad bleeding after he was shot near the couple. Trinidad told police that Natishia’s son showed up at the resort and started arguing with him and the couple. Investigators said he claimed the son pulled out a gun, so he returned fire and grabbed a gun from Natishia’s holster, shooting his son in self-defense. Trinidad reportedly said he heard Natishia beg him not to shoot her son and say she had been shot. However, he denied having his own gun and said he only grabbed Natishia’s gun when her son first shot him, investigators said.

Court documents say Natishia’s son told officers his mother had a long-standing affair with Trinidad. On the night of the shooting, he alleged he went to Trinidad’s apartment to visit his mother. However, according to police, Trinidad and the son began to argue and walked out of the apartment where Ronnie was. The group started arguing when Trinidad allegedly pulled out a gun and shot Ronnie in front of his son. The son said he immediately pulled out his own gun, started running away, and started shooting at Trinidad. A chase began between the two, with the two shooting at each other in the compound.

On Monday, Trinidad was arrested and told the same story to investigators, alleging that Natishia’s son began shooting at him before firing back with Natishia’s gun, according to court documents. He claimed to have only fired the weapon a few times. Trinidad was convicted of two counts of manslaughter and one count of possession of a weapon by an prohibited person.