A view of the building is seen where three Chinese and an Afghan were killed Thursday by unknown armed people in Kabul, Afghanistan, on Aug 9, 2013. [Photo/Xinhua]

The room where three Chinese and an Afghan were killed Thursday by unknown armed people is seen in Kabul, Afghanistan, on Aug 9, 2013. [Photo/Xinhua]

KABUL - Three Chinese citizens were killed and another two remained missing Thursday in Afghanistan's capital of Kabul, said Chinese Embassy here Friday.

The fatal crime occurred in an apartment building in Kabul and was believed to target Chinese citizens, the embassy said in a statement.

The embassy had urged the Afghan government to take all practical methods necessary to investigate the crime and arrest the criminals, and  ensure the safety and security of the Chinese citizens and institutions in Afghanistan.