An FBI task force arrested a Tucson man Friday on terrorism related offenses involving a conspiracy targeting government buildings in Phoenix and Tucson, Arizona, NBC News reported said.

Mahin Khan, 18, was arrested following an investigation by the FBI's joint terrorism task force, a spokesperson for the agency's Phoenix field office said.

Khan faces two state counts of terrorism and conspiracy to commit terrorism, the Arizona Attorney General's Office said.

Authorities told NBC News the arrest and allegations are not related to the Independence Day weekend, and the timing of the arrest was coincidence. There are no outstanding suspects.

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