JACKSONVILLE, Florida (AP) — Neighbors of a Bosnian-born man accused of making a fake bomb threat at Florida's Jacksonville International Airport said he lived a quiet life with his wife and children and they were shocked to see him under arrest.

Zeljko Causevic remained jailed Thursday on $1 million bail on charges that he falsely told a security screener he had a bomb in his backpack as he tried to enter the airport's passenger area Tuesday night. That caused a five-hour closure at the airport, the cancellation of dozens of flights and the stranding of passengers overnight.

The 39-year-old truck driver's backpack only contained an electronic scale, two batteries and a microchip, authorities said.

News of his arrest spread quickly on the quiet Jacksonville cul-de-sac where Causevic lives. Neighor Eldina Kadiric said that when she saw his picture on television Wednesday, she immediately thought, "Wait, I know him."

The news left her stunned, she said.

"It just seems like they're normal. They're just very normal," she said. "They have two kids who I see playing outside all the time." She said she doesn't know their ages, but one is nearly a teen and the other younger.

"I feel for the family and what they are going through," Kadiric said. "Even if it was a joke, that's a pretty bad joke to play."

Authorities and a witness say Causevic, a naturalized U.S. citizen, tried to bypass the airport's security checkpoint and then a Transportation Security Agency agent stopped him.

According to a Jacksonville Sheriff's Office arrest report, Causevic told the agent he had a device in his backpack that was "supposed to be a bomb, but it's not."

He also told authorities he had a "detonator," which was a remote control device.

Catherine Swan-Clark, who is seven months pregnant, was waiting to get a pat-down when she saw security agents gather around a man she believed to be Causevic.

"So you're telling me you have a bomb?" Swan-Clark heard a TSA agent ask him. "And he responded yes, 'I have a bomb.'"

Causevic remained silent during his brief hearing before Duval County Court Judge Russell Healey on charges of making a false report about planting a bomb and possessing a hoax bomb.

Phone numbers listed for Causevic were disconnected. There was no answer at the door of the family's home.

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Associated Press writers Derek Kinner in Jacksonville, Florida, and Christine Armario and Freida Frisaro in Miami contributed to this report.