DETROIT -- FBI officials said they are making little progress toward getting information out of a key suspect of the Michigan investigation into the Sept. 11 attack, Local 4 reported Wednesday.

Former Detroit resident Nabil Al-Marabh, 34, is being held in federal custody in New York. He is one of the FBI's top four suspects, Local 4 reported Wednesday, citing the Washington Post.

The FBI has reportedly offered suspects being held in its terrorist investigation lighter sentences, new identities and jobs, but the incentives have failed to get the men to share information about the attacks, the al Qaeda and any future attacks.

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A senior investigator suggested that it may be time to use torture tactics to get the men to talk, Local 4 reported. But a retired FBI agent and current security consultant Ned Timmons told the station Wednesday that he doubts the agency would resort to such tactics.

Al-Marabh has been tied to two of the hijack suspects, Satam Al-Sugami and Ahmed Al-Ghamdj, according to a British Observer report.

Al-Marabh remains jailed in New York in solitary confinement. He was arrested Sept. 19 in Justice, Ill., near Chicago, and has refused to cooperate with authorities, Local 4 reported.

Reporters at a Toronto newspaper found paperwork showing that Al-Marabh sent $15,000 to three men who federal agents believe were involved with the planning or funding of the terrorist attack.

Investigators were suspicious because the suspect had not held steady employment, having bounced from city to city in various jobs. He most recently had been turned down for a truck driver's position in the Chicago area just before the attack. He was formerly a cab driver who lived in Boston's Dorchester neighborhood for 10 years.

Earlier this month authorities in Canada raided a copy story in Toronto where Al-Marabh once worked and seized documents, paper, ink, computer discs and sheets of plastic used to make IDs, Local 4 reported. Investigators were looking into allegations that the suspect helped make fake identification for the perpetrators of the Sept. 11 attack and others.

The FBI has also linked Al-Marabh to a third suspected terrorist, turned informant, who has accused him of being an associate of Osama bin Laden, the reported mastermind behind the Sept. 11 attacks.

The informant himself is a suspect in the failed "millennium bombing" plot last year to kill American tourists in Jordan.