Grass Valley Police Department Sunday 12:24 p.m. — A caller from Colfax Avenue and Henderson Street reported a sinkhole in the road. 12:57 p.m. — A caller from the 900 block of Sutton Way reported a man purposely blocked a toilet with paper towels. He was advised not to return. 5:45 p.m. — A caller from the 400 block of Marshall Street reported a dog was attacked by another dog. 6:54 p.m. — A caller from Waterfall Lane reported ongoing shooting with a high-powered firearm. Monday 4:42 a.m. — A caller from the 300 block of Brunswick Road reported a …