Buildings and streets around a Florida federal courthouse have reopened after police investigated a suspicious vehicle parked nearby that checked out fine.
West Palm Beach police spokesman Chase Scott says a police dog alerted to the possibility of explosives inside a rental van after 8 a.m. Monday. It was checked because of unspecified derogatory comments written on the outside of the van.
A post office and a state health department building had also been evacuated.
A police bomb squad determined the van contained no explosives.
Authorities have been on heightened alert nationwide for potential terrorist activity coinciding with the 10th anniversary of the Sept. 11, 2001, attacks.