Ray Kelly expresses frustration that feds haven’t briefed him on Al Qaeda underwear bomb

NYPD top cop Raymond Kelly declared Friday he's peeved the feds still haven't debriefed him on the latest Al Qaeda underwear bomb plot recently foiled in Yemen.

Kelly revealed his frustration five days after a CIA drone strike killed a terror kingpin scheming to bring down a U.S.-bound jetliner with a sleek new undies explosive.

"We're still trying to get some specificity as to precisely what happened," Kelly said.

Kelly said he's completely in the dark over how the bomb - which contained no metal - was constructed.

"That's the type of information, quite frankly, that we need, deserve," Kelly added at Police Headquarters after a ceremony honoring fallen cops. "We're the nation's biggest target."

"We'd like to know the specifics of the device. We'd like to know the materials used, where those materials may be obtained, the shape and size of the device," Kelly added.

The information should flow from the federal joint terrorism task force, Kelly said.

"That's what it's set up for, for us to receive information, activity on the federal level," he added. "We want to get it as soon as possible, to protect this city."

Rep. Pete King (R-L.I.), head of the House Homeland Security Committee, said he believes Kelly's frustration is justified.

King described the CIA-led operation as the "most tightly held in the 20 years since I've been in Congress."

"To me, the CIA and the FBI should brief Mr. Kelly and the NYPD on as much as they can," King added.

"There may be certain information they still want to hold back for specific reasons, but they should provide more information than they have, especially since New York is always the number one target."

Fahd Mohammed Ahmed al-Quso, one of America's Most Wanted terrorists, was snuffed out by the drone Sunday as he stepped out of a vehicle in a remote valley in Yemen.

The hit came after a double agent infiltrated the Yemen Al Qaeda franchise and delivered the sophisticated, metal-free device to authorities.

The agent - a Saudi Arabian national working with the CIA, Saudi intelligence agencies and Britain's MI6 - was carrying a British passport.

The plot was planned for a date near last week's first anniversary of Osama Bin Laden's killing.

It was seen as a retooled version of the failed attempt to bring down a flight to Detroit on Christmas Day 2009.

On that day, Nigerian terrorist Umar Farouk Abdulmuttab merely set his leg on fire when he tried to detonate the plastic explosives sewn into his underpants.

The new device contained lead azide, a chemical known as a more reliable detonator.

By Rocco Parascandola And Rich Schapiro / NEW YORK DAILY NEWS