The prison service did not directly address reports 13 prisoners had died since last October.

“Pray for me mum,” Abdulrahman Mari said. “Things are getting harder here. They might not let me speak to you again”.

It would be the last time she heard his voice.

Conditions deteriorated for Palestinian prisoners in Israel after 7 October last year, when Hamas mounted its deadly assault on Israeli communities near the Gaza Strip, according to the West Bank-based Palestinian Authority’s (PA) Commission of Detainees Affairs.

Thirteen Palestinian prisoners have since died in Israeli prisons, “the majority of them as a result of beating or denial of medication”, the commission’s head, Qadoura Fares, told the BBC.

Abdulrahman was one of the first to die.