Graig Graziosi, and Jerod MacDonald-Evoy

The Republic | azcentral.com

The Federal Bureau of Investigation and the Arizona Attorney General's Office have arrested an 18-year-old Tucson man they say conspired to carry out acts of terrorism against government buildings in Maricopa and Pima counties.

Mahin Khan was arrested in Tucson following an investigation by the FBI's Joint Terrorism Task Force, according to the FBI. He was booked into Maricopa County jail on suspicion of conspiring to commit terrorism.

Attorney General's Office spokeswoman Mia Garcia and FBI officials said Khan's alleged plans did not involve the Fourth of July or any related festivities.

“The Arizona Attorney General’s Office is working closely with federal authorities to keep Arizonans safe. We are not aware of any threats Khan made that involve the Fourth of July holiday weekend,” Garcia said.

Garcia said there are no additional suspects and no current threat to the public involving Khan's plans.

Khan has had his initial court appearance but court records have been sealed and no additional details were immediately available.

A man who said he was Khan's father, contacted at his home in Tucson, declined to comment.

Records show Khan lived with his family in a gated community near River Road and Camino Boscaje Escondido in north Tucson close to the Catlina Foothills. Additional family members could not be reached for comment.

Neighbors who lived near the Khan family at a prior residence described the family as quiet, but declined to be interviewed.