ROCKLAND, Maine — The man accused of trying to kill his wife by pushing her off a Camden mountain pleaded not guilty Wednesday in Knox County Superior Court.

Charles Reed Black, 68, of Rockland was indicted by grand jury earlier this month for attempted murder and other assault charges.

Police say Black smashed a rock over his wife’s head on April 7 during a hike on Mount Megunticook in Camden Hills State Park. He then dragged her to the edge of Maiden Cliff and shoved her off, according to the indictment released Thursday afternoon.

Black also fell down the mountain and injured himself. His wife, Lisa Black, made it down the mountain alive, but was injured. A passer-by saw her bloodied and standing in the road and called 911. Police found Charles Black on the mountain. He was hospitalized, then police arrested him a few days later as he was being discharged.

Black is free on bail.

Black is charged with attempted murder, two counts of elevated aggravated assault, three counts of aggravated assault and two counts of domestic violence assault.

Police reports filed in Knox County Superior Court indicate greed as a possible motive for Black’s alleged attempt to kill his wife. Lisa Black recently had inherited about $4 million.