Palestinian prisoner in Israeli jails Wesam Abdul-Majid Shalaldeh, 28, was announced dead in mysterious circumstances on Friday, according to the Palestinian Prisoner’s Society (PPS).

PPS said Israeli prison authorities informed Shalaldeh’s family that he died in Ayalon prison, but did not inform them about the circumstances in which he died.

Shalaldeh, a father of four, has been in jail for three years and was serving a seven-year sentence.

He is the fourth Palestinian prisoner to die in Israeli custody since the beginning of the year.