Pakistani officials have released their highest-ranking Afghan Taliban prisoner in a bid to kick-start Afghanistan's struggling peace process.
Mullah Baradar, the former deputy commander of the Taliban, was freed early on Saturday, a Pakistani intelligence official and a security official said.
Pakistan's Foreign Ministry had earlier announced that Baradar would be released.
The Afghan government has repeatedly asked Pakistan to release Baradar and hopes he can help with peace negotiations. But some analysts and officials doubt he will make much of a difference.
Pakistan arrested Baradar under murky circumstances in a joint operation with the CIA in 2010 in the southern city of Karachi.