ELIZABETH, N.J. (CBSNewYork) — The FBI was back at the home of terror suspect Ahmad Rahami in Elizabeth, New Jersey, on Friday.

CBS2’s Tracee Carrasco reported that FBI agents trekked in and out of Rahami’s family home on Elmora Avenue for several hours.

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Agents in tactical gear — some with K-9s — carried boxes out of the home.

The FBI officials told CBS2 they were there to collect more evidence as they continue their investigation. CBS News reports the FBI has a search warrant looking for bomb-making materials.

The FBI said it is not unusual in investigations like this to make multiple searches.

At one point during the search, Rahami’s family left.

People in the neighborhood were unnerved by what has become routine there.

“I see a lot of police, that’s it,” said salon owner Mario Bireo. “I don’t know what’s going on. I know everybody’s scared.”

Audio of the 911 call made in Linden that led to Rahami’s arrest was just released.

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“There is this guy sleeping in front of my business. My business is not open right now, but can you send somebody?” the 911 tape said.

Rahami remains hospitalized after the police shootout. He is charged with planting bombs in Chelsea and New Jersey.

Federal authorities filed several charges against Rahami, a naturalized U.S. citizen from Afghanistan, including use of a weapon of mass destruction and bombing a place of public use.

Rahami, 28, is being held on $5.2 million bail.

Investigators discovered writings by Rahami, including a handwritten note and a small notebook that was found on him and had a bullet hole in it, law enforcement sources told CBS News.

Both contained written rants suggesting he was a consumer of different radical ideologies similar to several terrorist organizations, including al Qaeda and Boko Haram, CBS News reported.

The journal allegedly expressed disappointment that he might be caught before being able to carry out a suicide attack, according to the federal complaint.

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The Rahami family restaurant, First American Fried Chicken, has been shut down since Sept. 19.