A downtown Ann Arbor pizzeria sustained significant damage after catching fire early Tuesday morning, according to the Ann Arbor Fire Department.

Happy's Pizza in downtown Ann Arbor caught fire early Tuesday morning.

Fire crews were called to the corner of Main and Madison streets at 1:42 a.m. for the blaze at a single story business. Fire officials said it was a pizzeria. Happy's Pizza is located at that intersection.

Firefighters battled the blaze for several hours in temperatures that dipped to minus 15 degrees. Main Street between Hill and William was still closed around 7 a.m., officials said.

There were no reported injuries.

This story will be updated as more information becomes available.

John Counts covers crime for The Ann Arbor News. He can be reached at johncounts@mlive.com or you can follow him on Twitter. Find all Washtenaw County crime stories here.