WALKER — A grass fire Thursday, May 7, burned a quarter acre near the south end of Leech Lake in Cass County. The Cass County Sheriff’s Office responded to the fire at 3:08 p.m. in Turtle Lake Township, east of Walker. According to the sheriff's office, a grass fire was reported on the 8000 block of Hawthorn Trail Northwest and was spreading into the woods. Fire crews from the Walker Fire Department, Backus DNR station and the U.S. Forest Servic…