The resignation comes at a less-than-ideal team for the women's side, who take on South Africa in a high-profile series at home that begins on September 1 in Karachi. The sides play three T20Is and three ODIs, with all six games taking place in Karachi. The PCB said a new coach will be announced "in due course" though there is no guarantee a permanent replacement will be in place by the time that series begins.

Pakistan have a busy upcoming schedule, playing 15 ODIs and 17 T20Is in the upcoming year. Aside from South Africa, they host the West Indies at home, and travel to Bangladesh, New Zealand and England.

It is understood the resignation came as something of a surprise to the PCB, and Coles has not made any public comment on the matter. When he was announced as Pakistan's head coach alongside Nida Dar as the new captain, he said he was "excited to lead the team in the upcoming events".

"It has been a privilege to work with such a talented group of players and I look forward to the exciting times ahead as we aim to improve our previous performances and achievements," Coles had said at the time. "We have a lot of potential in the team, and I look forward to helping the players give their best and achieve success on the international stage."

The PCB said in a statement that it would "like to extend its gratitude to Mark Coles for his brief stint with the women's side and wishes him well in his future endeavors."