The founder and leader of the notorious Haqqani network Mawlavi Jalaluddin Haqqani has died, the Taliban militants group in Afghanistan said Tuesday.

According to a statement released by the Taliba, Mawlavi Jalaluddin Haqqani died of illness he was suffering during the recent years.

The Taliban group has not disclosed further information regarding the death of Mawlavi Jalalauddin Haqqani.

Haqqani network was formed in the late 1970s by Jalaluddin Haqqani. The group is allied with al-Qaida and the Afghan Taliban and cooperates with other terrorist organizations in the region.

The network is accused of staging numerous cross-border attacks from their base in North Waziristan, including the 19-hour siege at the US Embassy in Kabul in September 2011.

It is considered the most lethal insurgent group targeting the NATO-led coalition security forces and Afghan personnel in Afghanistan.

The US Department of State designated the HQN as a Foreign Terrorist Organization on September 7, 2012.