Pakistan's military intelligence organisation has confirmed that the leader of the Taliban group is hiding in the west of Pakistan's Quetta city, reports say.

A senior Pakistani intelligence official has said the Inter-Services Intelligence Agency (ISI) will step up a huge operation to detain or kill the Taliban leader Mullah Omar.

Meanwhile, Afghanistan's Foreign Minister during his visit to China said the death of Osama Bin Laden in Pakistan could end up helpful to Afghan peace process.

After the death of Osama Bin Laden in the garrison town of Abbottabad, the country's military intelligence agency has been planning to detain or kill the Taliban leader.

Some reports suggest the ISI has already launched a hunt-down operation in Quetta city of Pakistan.

An ISI official has said on condition of anonymity that a huge military operation will be launched in western parts of Quetta city.

Before the United States start tracking Mullah Omar or take similar action as the operation against Osama Bin Laden, we have planned to capture him alive, or kill him if he resists, the official has said.

During his China visit Afghan Foreign Minister Zalmai Rasoul said: "our primary investigations are not mature enough. Based on our investigations Osama's death could possibly strengthen the peace efforts."

The Omar hunt-down operation is believed to have been launched to downsize the humiliations of Islamabad after Osama Bin Laden was found living in Pakistan for several years.

The US ambassador to Pakistan has recently said if Islamabad fails to conduct operations to neutralise Mullah Mohammad Omar and the second man in command of al-Qaeda network Ayman al-Zawahiri, Washington will do it.

Meanwhile, the spokesman for Afghan intelligence organisation, Lotfullah Mashal, stressed that leaders of insurgent groups plan their attacks outside Afghan borders with full cooperation from Pakistan's military intelligence agency.