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Mohammad Iqbal said investigators came to his Shirley, N.Y. home early Thursday morning, asking about his relationship with the would-be bomber.

He said they also asked him about his friendship with another man, whose apartment in Centereach, N.Y. was also searched in connection with the investigation. The man had stayed with Iqbal for several months a few years ago.

Meantime, law enforcement officials said Shahzad admitted to receiving cash at a meeting in a Dunkin' Donuts shop in Ronkonkoma, N.Y. before the attempted attack.

Authorities took 30 days' worth of surveillance video from the store, but would not say whether the tapes had any useful information.

The officials also declined to say who Shahzad met with or how much money was exchanged.

Two Pakistani men in Massachusetts and one in Maine were arrested Thursday for allegedly funneling money to Shahzad, though it is not clear if they know how the money was being used. They are all are being held on immigration violations.

Pakistani officials told the Associated Press on Friday that least two men who may have helped Shahzad were in custody. It is not clear if the men have connections to a Pakistani militant group or the Pakistani Taliban.

Attorney General Eric Holder said the raids are a result of evidence gathered since the bomb scare, adding there is no immediate threat to the public.

Meanwhile, as an added layer of defense against terrorist attacks, a new federal program is training parking attendants and meter maids.

Thousands of parking industry workers nationwide will learn what to watch for, such as strange odors, cars parked where they shouldn't be and people who appear to be conducting surveillance by taking photos.

The workers are encouraged to report anything suspicious.

Federal Emergency Management Agency is funding the program, which has been in the works for about a year, as part of a larger effort by the government since the September 11th terrorist attacks to enlist ordinary people to serve law enforcement.