Police in Afghanistan say an explosion in the capital, Kabul, has killed two policemen and wounded their commander.
Officials say the commander, Ali Shah Paktiawal, appears to have been the target of Wednesday attack. He is the head of criminal investigations in the Afghan capital.
Paktiawal survived the blast with injuries, but two of his officers died.
Police say the bomb exploded when Paktiawal and his team were investigating the deaths of three of their colleagues. The three were killed in an overnight attack on a police post in the western outskirts of Kabul.
A Taliban spokesman claimed responsibility for both attacks.
Some information for this report was provided by AFP, AP and Reuters.