Kabul - Two foreign nationals and an Afghan guard were killed when gunmen opened fire on them in the centre of the capital Kabul on Saturday, police said.

"Two foreigners and one of their Afghan guards were killed by gunmen this morning," said Alishan Ahmadzai, a Kabul police official.

Another police officer at the scene said that the dead foreigners were a woman and a man, while two guards were wounded in the attack.

The attack happened in front of the offices of DHL, an international shipping company, located in the centre of Kabul. (dpa)