ERIE — A man is awaiting arraignment on charges he called a bomb threat into an Erie hospital because police say he was upset that his grandmother had to wait long for treatment.

Police didn't immediately release details about the suspect's grandmother, but say 52-year-old John Herrick, of Erie, made the call from his cell phone at 11:16 p.m. Monday. They say Herrick claimed there was a bomb near a hospital exit, but police found nothing.

Police used information from cell phone towers to locate Herrick who was arrested on charges of making terroristic threats and risking a catastrophe early Tuesday.

He's in the Erie County Jail. Online court records don't list an attorney for Herrick.