A key commander of the Pakistani Taliban, known as Tehrik-e Taliban Pakistan (TTP), has been shot dead at a refugee camp in southeastern Afghanistan, a Pakistani security source and a tribal elder have told RFE/RL.

A security official in the South Waziristan tribal district, in northwestern Pakistan, who requested anonymity said Qari Saifullah Mehsud was killed in his residence in the Gulan refugee camp overnight on December 28-29.

Daud Mehsud, a tribal elder at the camp, told RFE/RL on December 30 that the two gunmen had been "guests" at the TTP commander's home for several days before they killed him and fled.

A provincial police spokesman, Haider Adil, confirmed a killing but did not confirm the identity of the victim. He said a "criminal" case had been launched.

Mehsud was buried in the Gurbaz district of Khost Province at around 3 p.m. local time on December 29, the tribal elder added.

The TTP has not issued any statement.

Qari Saifullah Mehsud had fled the Pakistani military offensive in North Waziristan in 2014.

He had worked as a TTP spokesman in Kurram tribal district as well.