Adib Fahim has stepped down as deputy chief of the Afghan intelligence, the National Directorate of Security (NDS).
Fahim published a copy of his resignation letter online which he submitted to President Mohammad Ashraf Ghani and Chief Executive Abdullah Abdullah on Wednesday.
He described personal issues as the main motive behind decision to step down.
Meanwhile, Fahim said he would remain committed and strive for the realization of the ambitions of the country.
The Offices of the President and Chief Executive have not commented regarding the resignation of Mr. Fahim so far.
Adib Fahim is the eldest son of the former Afghan Vice President Mohammad Qasim Fahim who passed away in early 2014. He assumed charge as the first deputy chief of the National Directorate of Security early in June of 2015.