An armed man was arrested Friday afternoon outside of a stadium in Arizona, where a memorial service for conservative activist Charlie Kirk – who was shot and killed as he spoke at an event at Utah Valley University on Sept. 10. – is scheduled to take place, law enforcement officials said.

The U.S. Secret Service (USSS) told CBS News in a statement that a man was "observed exhibiting suspicious behavior" at the NFL-sized State Farm Stadium in Glendale. Secret Service agents approached the man, who told agents that he was a member of law enforcement and was armed.

The Arizona Department of Public Safety said the man, identified as Joshua Runkles, was not a member of law enforcement. Runkles, 42, was booked into the Maricopa County Jail for impersonating a law enforcement offic

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