New Delhi, Dec. 12 -- Crews are working to extinguish a major fire at Bass Bay Brewhouse, a popular lakeside restaurant in Muskego, Wisconsin, according to multiple reports. Firefighters responded on Friday morning after flames broke out at the business just north of Bass Bay.

The restaurant and the residential portions of the building were fully evacuated. Authorities urged the public to avoid the area around Ladwig Drive and Aud Mar Drive as crews continued to battle the blaze. Residents were also asked to steer clear of the stretch between Lannon Drive and Moorland Road until further notice.

It remains unclear what caused the fire, reports stated. Fire officials are currently assessing the damage and investigating the origin of the i...