Police have swarmed a Narre Warren street on Tuesday morning after a man was behaving erratically and barricaded himself into a house near Westfield Fountain Gate.
The police gathered around Heyington Circle with the Critical Incident Response Team at the scene.
Paramedics are on the scene and it is believed the incident is mental health-related.
It is believed that no one else is inside the home or on the premises.
Victoria Police are yet to make a comment.