Police say a Maryland man who was threatening people's lives and claimed to "own'' the government may have been planning a mass shooting.



Anne Arundel County police spokesman Lt. Ryan Frashure says officers arrested 56-year-old Kirk Green on Saturday after he caused a disturbance at a grocery store. Frashure says officers later found guns, ammunition and plans to attack government agencies inside his vehicle at his Edgewater home.



Police say Green had circled locations on a map and had written in a journal that he planned to "take back the land.''



Investigators say Green was prohibited from possessing a gun because of a 2009 conviction for illegal possession of a firearm.



According to online court records, Green on Thursday was ordered held without bond on five counts related to illegal weapons possession.

