PHOENIX — Authorities are investigating a "suspicious package" near the Arizona State Capitol in downtown Phoenix on Monday.
Officials with the Arizona Department of Public Safety say a suspicious package was received at around 8 a.m. by the Arizona Supreme Court.
DPS says the package contained multiple vials. Two of the vials tested positive for homemade explosive substances.
Multiple buildings near 15th Avenue and Washington Street were evacuated, including the state's court building, which houses the Arizona Supreme Court, and the Court of Appeals Division I.
WATCH: Authorities provide an update Monday afternoon in the player below
The state court's building was closed for several hours, but DPS has cleared the building.
The Arizona Supreme Court tells ABC15 that regular business hours will resume Tuesday.
No other information has been provided as the investigation remains ongoing.
A letter sent to court staff obtained by ABC15 states, "a suspicious package was received by our mailroom and has tested positive for homemade explosives."
All staff were advised to head home and work remotely while a sweep of the buildings is conducted by law enforcement.
Earlier in the morning, the Maricopa County Sheriff's Office confirmed it was investigating a bomb threat in the Queen Creek area that turned out to be a hoax.
There is no information to suggest that these incidents are related.
