CAMBRIDGE, Wis. — Fire destroyed a restaurant in Cambridge and prompted the shutdown of a highway.

The blaze broke out at Giovanni's on Sunday night. No one was inside at the time, and no injuries were reported.

U.S. Highway 18 was shut down as emergency crews responded and stayed on scene through the night, but all lanes were reopened about 5 a.m. Monday.

The cause of the fire wasn't immediately determined.