"We have given to the American delegation a detailed list of 5,000 people that cannot be forged or edited," Suhail Shaheen tweeted.

He said their members, "be they in a desert or in prisons," should be handed over to them for identity verification, "and they should release only those people whom we listed."

The prisoner release was mentioned as a precondition in the US-Taliban peace deal — signed in Doha in late February — for the start of intra-Afghan talks.

The Taliban said they would not engage in a dialogue with Kabul until their demand was met. Afghan President Asharf Ghani, who was excluded from the talks, has so far rejected the precondition.