Crews are investigating a rooftop fire that broke out in north Seattle on Thursday evening. According to the Seattle Fire Department, the fire began around 9:45 p.m. on the roof of a four-story apartment complex in the 500 block of North 85th Street in the Greenwood neighborhood. Crews managed to keep the fire from spreading beyond the roof. No one was hurt and all residents were able to return to their apartment units in less than an hour.