KHARTOUM, Sudan (AP) — Sudanese authorities said they arrested 13 people on Thursday, including the once-powerful head of national security, on suspicion of involvement in an apparent military coup attempt.

State-run Omdurman radio said a “subversive plot” — a term often used by Khartoum to refer to plans for a coup — was uncovered and aborted. Among those arrested was former head of National Security and Intelligence Services Lt. Gen. Salah Abdallah Gosh, according to remarks by Information Minister Ahmed Bilal Osman carried by the state Sudan News Agency.