Washington ? Though it has no evidence of a specific plot, the FBI warns that it possesses intelligence that terrorists are interested in using shoe bombs to down airliners — like the attack foiled a year ago.

In its latest intelligence bulletin, the FBI urges law enforcement nationwide to stay vigilant to the possibility that terrorists might try to hide bombs in bulky winter coats, shoes or other garments.

“The U.S. intelligence community continues to receive credible information that terrorist operatives remain interested in utilizing shoe bombs during the conduct of hijackings or other attacks against commercial airliners,” the bulletin reported late Monday night.

Although the FBI said it has “no information indicating a specific plot,” it called on law enforcement agencies to “remain alert to the possibility that explosive devices may be concealed in shoes, jackets or other article of clothing for possible use in attacks against airliners.”

Officials said the bulletin was timed to coincide with the one-year anniversary of the foiled attack by Richard Reid, a British citizen and al-Qaida sympathizer.

Reid was overpowered by passengers and crew aboard an American Airlines jet on Dec. 22, 2001, after he unsuccessfully sought to light the fuse of an explosive hidden in his shoes. The Paris-to-Miami flight was diverted to Boston, where Reid was taken into custody.

Reid, 29, has since pleaded guilty to trying to blow up the plane. A convert to Islam, Reid acknowledged in court that he is an al-Qaida member and pledged his support to Osama bin Laden. He faces 60 years to life in prison when sentenced Jan. 8.

There have been recent developments in the shoe bomber case.

Late last month, French authorities detained seven suspected Islamic militants with possible ties to Reid. Anti-terrorism judges authorized the pre-dawn arrests of six Algerians and Pakistanis in Paris’ suburbs, including an imam of a mosque. A seventh suspect who once ran a Paris prayer hall was picked up on Reunion island, a French territory in the Indian Ocean, officials said.

FBI officials have said they suspected Reid received help in creating the shoe bomb and continue to look for possible accomplices. Among the evidence being pursued is an unidentified hair and a palm print found on the explosives in Reid’s shoes.

The FBI also is checking out other terrorist threats.

Agents last week arrested a Yemeni man in Michigan after the suspect’s ex-brother-in-law reported he believed he was a terrorist linked to al-Qaida and “was getting ready to bomb you guys.”

A raid on the home of Mohamed Nasser Alajji turned up a number of anti-American tapes and documents, the Justice Department said Monday.