On scene: Ongoing tactical situation on Milwaukee's far northwest side

MILWAUKEE (CBS 58) -- CBS 58 is following a tactical situation happening on the far northwest side. 

Police have set up a perimeter near 71st and Brentwood, where an armored truck among other units is outside a house. 

CBS 58 crews on scene can see a police presence, with officers have the area blocked off with tape, and no one is allowed to be close to the scene. 

Tactical teams and a bearcat vehicle have been called in. 

CBS 58 is working on figuring out what led to the response and have reached out to Milwaukee police for more information.