The investigation into the Water Patrol and the death of 20 year old Brandon Ellingson has brought about yet another lawsuit. This time, though, it’s not against the Highway Patrol. The new lawsuit is a defamation suit against Leslie Chamberlain and Amy Frank. The plaintiff, Garrett Grellner, is the son of Osage County Prosecuting Attorney Amanda Grellner. Amanda was the Special Prosecutor for the Ellingson case before excusing herself from the position for conflict of interest. Garrett is now suing Chamberlain and Frank, claiming they both published posts on Facebook that accused him of raping a girl in 2012. In Chamberlain’s post she also claimed there was collusion between Amanda and the Highway Patrol regarding the Piercy investigation and the rape investigation. Court documents show that Garrett took a DNA test in 2013 and was proven innocent. The suit was filed in the Osage County Courthouse last week.