Madison police confirmed that officers are involved in a "tactical incident" on the city's east side Thursday night.
Officers responded to the 3800 block of Atwood Avenue, and officers had their guns drawn.
Police wouldn't release any other details about the nature of the call.
The Dane County Sheriff's Office said that Madison police requested the assistance of the bomb squad.
A neighbor told WISC-TV she walked outside around 10:30 p.m. and saw a police sniper.