Iran’s Judiciary spokesman Gholamhossein Esmaili said the health ministry would oversee the release of prisoners, but did not elaborate on where they would be kept or how authorities would keep track of them, semi-official news agency ISNA reported.

“The health of the prisoners is very important for us regardless of their status as security prisoners or regular prisoners,” Esmaili said.

It was also unclear whether Nazanin Zaghari-Ratcliffe, the British-Iranian mother jailed in Iran on espionage charges, would be among those released.