Wisconsin ? A weekend shooting that left six people dead in an apartment, including twin baby boys, was a murder-suicide committed by the father of the children, police said Wednesday.

Ambrosio Analco killed infants Isaiah and Argenis Analco, his ex-girlfriend, Nicole McAffee, and two other people before shooting himself Saturday, Delavan Police Chief Tim O’Neill said. He also wounded his 1-year-old daughter, who was found in a van outside the home in Delavan, in southeastern Wisconsin.

Although investigators were still waiting for the results of tests on forensic evidence, O’Neill said “all agencies are confident this was a murder-suicide.”

A cousin has said Analco, 23, had gone to the house to drop the kids off with McAffee, 19. Also killed were McAffee’s sister Ashley Huerta, 21, and McAffee’s friend Vanessa Iverson, 19.

Analco’s daughter, Jasmine, was shot in the chest. She was in good condition Wednesday at the University Hospital in Madison, officials there said.