Amiremad Nayebyazdi was arrested while taking suspicious photos at the Memorial and threatening to set off an explosive device that would kill hundreds of people there.

Breitbart KOCO reported Monday that the suspect, Amiremad Nayebyazdi, allegedly called his sister living in Iran to say that “hundreds of people are going to die in Oklahoma City, and something very large is going to happen.”

A concerned person in California told police on November 1 that Nayebyazdi left his sister a recorded voice message, which the caller “loosely translated” as “Hundreds are going to die in Oklahoma City, something very large is going to happen, it will be on the news, and don’t tell mom and dad until it is seen on the news,” the message reportedly said, according to the caller.

The FBI’s Joint Terrorism Task Force contacted Oklahoma City Police on October 30 about a man taking suspicious photos at the memorial. The person, later identified as Nayebyazdi, had been spotted taking photos of the memorial at unusual angles and in odd spots on multiple occasions, officials said.

A team of police officers, FBI agents, and a bomb squad had been dispatched to the suspect’s home in Oklahoma City, where they found no explosive devices. They spoke to Nayebyazdi, who told authorities he “hears things” and told his sister the explosion was going to take place.