NORTH HAVEN, Conn. (AP) — A house in Connecticut exploded Wednesday night while police and a SWAT team were outside, having responded to a report of a barricaded person.

At least three police officers in North Haven were seen being placed into ambulances, WFSB-TV reported.

READ MORE: WATCH LIVE: Mayor Brandon Scott To Make Investment Announcement With American Rescue Plan Funding

Residents near the home said on the police department’s Facebook page that they heard the explosion and felt their own homes shake around 8:30 p.m.

Video shows police rushing to the scene and a raging fire. Sounds of smaller explosions also were heard.

Police did not immediately release any details about why they were there, but issued road closures and asked that people to avoid the area.

Firefighters worked to get the blaze under control more than an hour later.

READ MORE: FDA Expected To Approve J&J, Moderna Covid Booster Shots, ‘Mix and Match’ Doses

State police said they were assisting North Haven police with the investigation.

North Haven is located just outside of New Haven, home to Yale University.

It’s 27 miles (43 km) south of Hartford, Connecticut’s capital.

Follow @CBSBaltimore on Twitter and like WJZ-TV | CBS Baltimore on Facebook

MORE NEWS: 'Part Of Us Died With Her,' Ja'Nyi Weeden's Cousin Tells WJZ

(© Copyright 2018 The Associated Press. All Rights Reserved. This material may not be published, broadcast, rewritten or redistributed.)