A rogue Afghan soldier suspected of killing an Australian soldier last month has been tracked down and killed by coalition and Afghan forces.

NATO says the Afghan was killed Sunday in Khost province after pulling a gun on troops attempting to capture him.

Officials say a man believed to be the soldier's brother was detained for questioning.

The Afghan soldier had been on the run since the May 30 killing of an Australian soldier in Uruzgan province. NATO says the slain Australian was supporting mentoring efforts with the Afghan army.

Separately, NATO says a bomb blast killed one of its troops Monday.

Also Monday, the Afghan government executed two men convicted for their part in the attack on a Jalalabad bank in February that left 40 people dead.

Officials say the two men, one an Afghan and the other a Pakistani national, were hanged Monday morning in a Kabul prison.

The bank attack targeted Afghan security force members collecting their salaries and sparked outrage in Afghanistan.

Surveillance video from the bank showed the assailants shooting unarmed civilians in the Taliban-claimed attack.