WINOOSKI, Vt. (WCAX) 12: 44 A.M. UPDATE
A man is in custody after about eight hours of negotiating.
57-year-old Adrian Formel is waking up at the Chittenden Regional Correctional facility and is waiting for arraignment.
According to police, Formel appeared to be having a mental health crisis and did not want to speak with officers by phone or exit the home.
The standoff with police started around 3 PM on Friday afternoon on Dion Street in Winooski.
Winooski Police say Formel was barricading himself in the home with a handgun.
We have an update now on that massive police presence in Winooski where officers staged on Dion Street with riot gear and assault rifles.
Police say a gunshot was fired when they responded to a domestic violence call.
Winooski police tell WCAX News that officers were called to the home on Bellevue Street Friday afternoon. They saw a gun and as they backed out of the residence, a single shot was fired. They don't yet know who fired the shot but said it was not fired by police.
Neighboring homes have been evacuated.
Friday evening, police said they were negotiating with someone inside the home, trying to get the person to come out. They could be heard using a loudspeaker outside the home. Earlier, police told us someone inside the home had threatened self-harm.
They say a second person involved in the domestic dispute was found safe outside the home. There are no reports of any injuries.
Winooski police say Burlington police came to assist them and now Vermont state police have taken over the scene.
Our Ike Bendavid is at the scene and we will have more information for you when it's available.