Multiple buildings were evacuated on the Arizona Capitol Mall on Monday due to the contents of a package sent to the state Supreme Court.
A state building that is home to the Supreme Court and another that holds the Court of Appeals were both evacuated.
Officials say the Department of Public Safety learned early Monday that the Supreme Court had received a suspicious package.
Multiple law enforcement agencies responded to the scene.
They found the package contained multiple vials, including two that tested positive for a homemade explosive substance.
The Phoenix field office for the Bureau of Alcohol, Tobacco, Firearms and Explosives said agents were on scene investigating a suspicious substance.
BREAKING NEWS @ATFPhoenix is on scene at the Arizona Supreme Court Building at 1501 W. Washington St. Phoenix, AZ to investigate a suspicious substance found at the location. Please direct all media inquiries to local state law enforcement authorities for updates. pic.twitter.com/44EWL9KYWE
— ATF Phoenix (@ATFPhoenix) January 5, 2026
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