SPOKANE, Wash. -

A suspicious package shut down part of downtown Spokane on Wednesday afternoon and prompted the partial evacuation of the federal courthouse.

The FBI was called to the Foley Federal Building around 11 a.m. when a suspicious package was delivered along with the rest of the mail. Investigators did not release specifics but say it was the appearance of the package that caused them to be alarmed.

The bottom two floors of the building were evacuated, and Main was shut down between Lincoln and Monroe while the explosives disposal unit arrived with tools to scan and disarm the package. Bomb sniffing dogs were also brought to the scene to search for potential explosive devices.

Finally around 2 p.m. crews determined that the package was not a threat and raised the evacuation order and reopened the street.