Mushtaq Ahmed has left his role as England spin-bowling coach to take up a similar position with Pakistan.
The Pakistan Cricket Board has confirmed that Mushtaq, who played 52 Tests for the country, will join their coaching set-up with immediate effect.
Mushtaq had been working with England for the past six years but has now left as part of a series of changes following last winter's Ashes defeat.
His departure, coming soon after the reappointment of Peter Moores as head coach, follows the exit of batting coach Graham Gooch earlier this month.
Former England and Essex spinner Peter Such has been mentioned as a possible replacement in some reports.
A statement from the PCB read: "Acting on the recommendation of the coach selection committee, the chairman, Mr Najam Sethi, has appointed former Pakistan leg-spinner Mushtaq Ahmed as the national spin bowling coach with immediate effect.
"Mushtaq signed the contract with PCB (on) Monday morning and has taken charge of his position.
"Until recently Mushtaq was holding a similar position with the England and Wales Cricket Board."