LANCASTER, Pa. (AP) — Authorities in central Pennsylvania say an anonymous report of a possible bomb in a downtown Lancaster parking garage that prompted an evacuation was unrelated to Sunday’s killing of Osama bin Laden by U.S. troops.

Lancaster Police Chief Keith Sadler told the (Lancaster) Intelligencer Journal/Lancaster New Era that the anonymous call actually was related to a police investigation that has been going on for the last few days. He declined comment on the nature of that investigation, which also has involved the FBI.

A caller at 3 a.m. Monday reported the possible presence of a bomb in the Prince Street garage, prompting an eight-hour evacuation of residents in a two-block area along with street closures. Police said a sweep by state police K-9 dogs turned up no evidence of explosives.

(© Copyright 2011 The Associated Press. All Rights Reserved. This material may not be published, broadcast, rewritten or redistributed.)