Police are investigating an explosion and fire that destroyed a house on the eastern edge of Superior's Billings Park neighborhood late Sunday morning.

At around 10:50 a.m., the Superior police and fire departments responded to a report of an explosion at 2219 N. 22nd St., the Superior Fire Department said in a statement Sunday. Crews arrived to find the house engulfed in flames. Battalion Chief Howard Huber said at around 12:30 p.m. the fire was out and firefighters were extinguishing hotspots while investigators were on the scene.

Battalion Chief Scott Gordon issued a statement Sunday evening saying the incident was under investigation by the Superior Police Department.

Citing a need to “preserve the integrity of the investigation,” police did not report Sunday whether anyone was home at the time of the explosion or whether anyone was injured, and did not comment on the cause of the incident. The house appeared to be totally destroyed. Mayo Ambulance also responded to the call.

The police department has requested the assistance of the federal Bureau of Alcohol, Tobacco, Firearms and Explosives and the Wisconsin Division of Criminal Investigation.

Superior Mayor Jim Paine made a post on Facebook saying there was no risk to surrounding homes or the neighborhood - an area that is all at once remote, wooded, urban and industrial, and bordered on three sides by railroad tracks just south of the 21st Street viaduct.

One Superior resident reported hearing an explosion more than two miles away, in Central Park. Bystanders reported that the explosion shook their houses.