(KYMA, KECY/CNN) - Phoenix Police are investigating after 2 children were found dead in a Phoenix apartment Wednesday night and their mother was critically injured.
A police spokesman said it was an aggravated assault incident.
However, it was not obvious how the children died. Investigators believe the children's father called 911.
He is now in police custody and cooperating with investigators.
Police are not calling him a suspect at this time.