Investigations into the assassination bid on Pakistan President Pervez Musharraf [ Images ] has reportedly revealed that one of the bombers involved either belonged to the banned Jaish-e-Mohammed or its breakaway group Khudam-ul-Islam.

At least 20 people have been detained for question into the Christmas Day attack, Pakistani daily The Nation reported. The paper also said the other bomber involved was believed to be a Chechen.

Other newspaper reports, however, said the local suicide bomber has been identified as Muhammad Jamil of Rawalkot in Pakistan-occupied Kashmir [ Images ] who had links with a little-known Pakistani militant group al-Jehad.

But The Nation said Jamil was a member of the Jaish, whose leader Maulana Masood Azhar was released by India [ Images ] a few years ago while swapping passengers of a hijacked Indian Airlines plane in Kandahar in Afghanistan.

Jaish was banned last year and Azhar floated Khudam-ul-Islam, which was also proscribed recently by Musharraf.

However, there appeared to be a few details regarding the identity of the Chechen militant, who believed to have belonged to a Chechen group owing allegiance to al-Qaeda.

The Nation said the identification of the two suicide bombers, whose faces were found to be intact, has led to several arrests in Islamabad [ Images ], Rawalpindi and Rawalakot in PoK.

The clues found at the blast site, which included a chip of the cell phone carried by one of the attackers and the chassis and engine numbers of the two cars used in the incident, led police to detain a number of people, it said.

Based on the engine and chassis numbers, owner of one of the cars identified Jamil as the one who bought it a few days before the attack.

Other newspaper reports also said that Jamil, 31, son of Muhammad Sabil Khan, belonged to a religious party and his parents said he left home several years ago and visited them once in a while.

Pakistan Information Minister Sheikh Rashid on Saturday said a 'network' of local and foreign militants has been identified as the one responsible for the attack.