JOHANNESBURG (Reuters) - One person was killed at a mosque near Durban in South Africa when three people armed with guns and knives attacked worshippers, slitting the throats of three people before fleeing, an emergency service official said on Thursday.

“One of the three has just died on his way to hospital. The other two are in critical condition,” said Prem Balram, a spokesman for Reaction Unit SA who was first on the scene. The motive of the attack was not clear, he said.