Kabul’s police chief has resigned, following a surge in attacks by Afghan militants on foreigners in the city over the past two weeks.

General Zahir Zahir gave no reason for his resignation, his spokesman said.

Three South Africans were killed in a Taliban attack on a compound used by a US-based charity on Saturday, the third such attack in the past 10 days.

President Ashraf Ghani, who took power in September, has vowed to bring peace after decades of conflict.