The Old Mill in Newton was heavily damaged by fire Monday night, although no damage estimates were available Monday night. As of about 8:30 p.m., Newton Fire/EMS Chief Gary Denny said at least one person was in the building when the fire broke out, and he didn't believe anyone else was inside. No injuries were reported. Denny said the roof intregrity of the building was in question, and most of the damage was to the east one-third of the structure. The cause of the fire is under investigation. One of the businesses at the Old Mill is Reba's Restaurant and Bar. Owners of that restaurant, Lander and Reba Ballard, were on scene Monday night and were quite concerned about the restaurant. At least two blocks of Newton's Main Street were blocked off for about one and one-half hours. Watch The Newton Kansan's Tuesday edition for an expanded story and more photos.