A Pakistani spokesman says federal investigators have arrested two officials involved in issuing Pakistani documents to the slain Taliban chief, Mullah Akhtar Mansour, and his family.

Mansour was killed in a U.S. drone strike a week ago in southwestern Baluchistan province. A Pakistani passport found near the destroyed car identified him as Wali Mohammad.

Interior Ministry's spokesman Sarfaraz Hussain says Aziz Ahmed, an official in Baluchistan's capital of Quetta, was arrested on Saturday. Hussain says Ahmed approving a national identity card for Mansour in the name of Wali Mohammad in 2001.

The second official arrested is Riffat Iqbal, with the registration authorities in the port city of Karachi. Hussain says Iqbal was arrested for facilitating the paperwork on Pakistani citizenship for Mansour's second wife and his children.