The Zeteo news website is reporting that Israeli authorities are denying permission for 11 American doctors and nurses to leave northern Gaza, Al Jazeera reports.

The health workers from the humanitarian organisation Rahma were meant to leave Gaza on Wednesday but Israeli authorities said that was not possible due to an unspecified “incident” at a security checkpoint, the outlet reported.

Israeli authorities are also preventing another larger team of health workers from Rahma from entering Gaza, Zeteo added.