Police say a man apparently shot the mother of her three children in northwest Miami-Dade on Saturday morning and then shot himself while the children were home.

The fatal shooting occurred around 8:34 a.m. after the man showed up at the apartment in the 12,000 block of West Randall Park Drive in Westview. He argued with the victim, police said, and shot her before committing suicide.

The shooter, a 40-year-old man, and the victim, a 39-year-old woman, had separated several months ago, according to Miami-Dade police Detective Andre Martin. The man did not live in the house.

They had three children together, ages 15, 13 and 9, all of whom were at home at the time of the murder, Martin said.

The 15-year-old called 911, police said. The youngest was taken to the hospital as a precaution after witnessing the horrific incident.

“Our prayers are with this family and these children,” Martins said. “It is a very sad and unfortunate incident, and our investigators are doing everything they can to find out exactly what happened here.”

Her parents, whose identities could not be immediately determined, died at the scene of the accident, according to authorities.

If you or someone you know is experiencing domestic violence, contact the National Domestic Violence Hotline at 1-800-799-SAFE (7233), visit www.thehotline.org, or text LOVEIS to 22522.

This is a developing story. Refresh for updates.