Militants in Pakistan have kidnapped a Pakistani filmmaker and two former Pakistani intelligence officials and are demanding the release of three Afghan Taliban leaders in return for the release of the three hostages, an Afghan Taliban source said Monday.

The source e-mailed CNN videos of the two former intelligence officials, Khalid Khawaja and retired Col. Sultan Amir Tarar. The source said they would be killed if Afghan Taliban leaders Mullah Abdul Ghani Baradar, Mullah Abdul Kabir and Mullah Mansour Dadullah were not released in 10 days.

Baradar was the No. 2 man in the Afghan Taliban behind Mullah Mohammed Omar before he was captured in Pakistan in February.

Khawaja and Tarar are former members of the ISI, Pakistan's top spy agency. The two were acting as guides for filmmaker Asad Qureshi, who was working on a documentary on militants in Pakistan's tribal region.

Read the full CNN.com story