Pakistani authorities have arrested a key Taliban leader, Zia-ur-Rahman, in capital Islamabad, local TV channels reported on Sunday.

Express TV reported that Zia-ur-Rahman was the in-charge of intelligence network of Tehrik-e-Taliban Pakistan (TTP).

The leader was arrested Saturday night and he is being questioned for his activities, the report said. There were no further details about identity of the arrested Taliban leader.

Another local TV channel reported that Zia-ur-Rahman was arrested in an overnight raid from G-11 sector of Islamabad.

There is no official word on the arrest and identity of the report.

The name of the arrested Taliban leader has created confusion as there is another senior Taliban leader with the name of Qari Zia-ur-Rahman.

Qari Zia-ur-Rahman, who had been living for years in Bajaur tribal region in northwest Pakistan is now leading his fighters in Afghanistan's eastern Kunar province. He had moved to Afghanistan in the wake of major military operation in Bajaur in 2008-2009.

Qari Zia-ur-Rahman was wanted both by the U.S. and Pakistani sides for attacks in Pakistan's Bajaur tribal region and attacks on U.S. security forces in Afghanistan.