Denver man with possible terrorist ties eyed in NY

NEW YORK - Terrorism officials in New York searched homes Monday concerned about the activities of a man visiting the city from Denver.

The FBI's Joint Terrorism Task Force hit the apartments in the early morning hours on Monday. One of the men questioned was Nazi Khan, a local pushcart vendor.

Khan says he let an Afghan man who lives in Colorado stay at his apartment for a couple of days. The Colorado man's name has not been released.

Khan says he told the FBI he knows nothing about any possible terror links.

"They asked me about him. The guy stayed in my apartment for one Thursday night. I met him, he came to the mosque and he said, 'I would like to stay in your apartment,'" Khan said.

Khan says the FBI searched his entire apartment before questioning him for hours about three men in all.

"They did not point to any al Qaeda or any stuff like that. But they just tell me, 'Do you know these guys?' Two of them I knew. I told them, 'Yes, these guys I know," Khan said.

Law enforcement authorities say they are concerned the Colorado man is an extremist who traveled to meet with several immigrants in New York, some from the same Afghan region.

After several searches along Parsons Boulevard and 41st Avenue sources tell NBC no weapons were found and no charges were filed.

Investigators say in one search they did find a document about bomb-making belonging to the man from Colorado.

Police seized his car but allowed him to fly home to Denver where friends say he works as a cab driver. Authorities say his car is still being searched.

Senator Charles Schumer (D-NY) was briefed on the FBI raids earlier in the day.

"There was no danger that was imminent ... no action that was imminent," Schumer said.

Officials stress the timing of the raids had nothing to do with President Obama's visit or that it was on the day Osama Bin Laden put out another taped warning.

The FBI and New York Police Department declined to comment on the investigation, only saying it is ongoing.