Pak militants threaten more bombs

8220;All those who will facilitate Americans and NATO crusaders like owner Sadruddin Haswani, they will keep on receiving the blows,8221; said the message, which was in English.

It was impossible to verify the identity of the group or say whether it was in a position to make good on the threat.

Pakistani officials were not immediately available for comment.

The group demanded that Pakistan break with Washington in an earlier message that claimed responsibility for Saturday8217;s truck bombing at the Marriott in Islamabad, a blast that killed 53 people and wounded more than 270.

Little or nothing is known about the group. Pakistani officials suspect al-Qaida or Taliban militants carried out the bombing. The attack underscored the threat posed by Islamic extremists, many of whom are based in the lawless, tribal regions along northwestern Pakistan8217;s border with Afghanistan.

The US has stepped up attacks on suspected militants in the frontier area, mostly by missiles fired from unmanned drones operating from Afghanistan. The incursions especially a ground raid into South Waziristan by American commandos September 3 have angered many Pakistanis.

Today, Pakistan8217;s army said it had found the wreckage of a suspected surveillance drone in South Waziristan, but denied claims by Pakistani intelligence officials that troops and local people shot down the aircraft.