SCRANTON (AP) - A state police trooper seriously wounded in a 2014 ambush a near a rural barracks in eastern Pennsylvania has put the accused shooter and his parents on notice that he plans to sue them.

The Times-Tribune reports court documents were filed on behalf of trooper Alex Douglass against Eric Frein and his parents, Eugene and Deborah Frein.Scranton attorney Vincent Cimini filed a writ of summons on behalf of Douglass in Monroe County Court last month, notifying the Freins a lawsuit will be filed.Eric Frein is charged with fatally shooting Cpl. Bryon Dickson II and wounding Douglass outside the Blooming Grove barracks.