The head of the UN's Human Rights office in Palestine, Ajith Sunghay, stated on Friday that "Israel" is mistreating Palestinian detainees in Gaza, reporting meetings with detainees who described how they were held for weeks, beaten and blindfolded, with some even released in diapers.

He added that it is not clear exactly how many men had been detained by "Israel" since it began its war on Gaza, but he emphasized that the number ran into the thousands.

"These are men who were detained by the Israeli security forces in unknown locations for between 30 to 55 days," Sunghay told reporters in Geneva by video link from Gaza, adding that he met released detainees. 

"There are reports of men who are subsequently released, but only in diapers, without any adequate clothing in this cold weather," he described.

The Israeli military office claimed that "detainees were treated in accordance with international law, and were often required to hand over clothes to ensure they were not carrying weapons or explosives."

In December, Israeli TV broadcast footage of Palestinian men stripped to their underwear in Gaza.

IOF tortures Palestinian prisoners using refrigerator trucks

Al Mayadeen's correspondent in Gaza reported on Thursday, citing accounts of released Palestinian detainees, that "Israel" "exposed prisoners to low temperatures as a means of coercing them to make false confessions" by placing them in iron caravans with refrigerators set at - 20 degrees.

Our correspondent added that the families of prisoners "know nothing about their sons who were arrested by the IOF in the northern parts of the Gaza Strip."

Reporting on the state of Gaza's healthcare system, the correspondent stated that doctors are resorting to amputations on the injured "due to the lack of essential medications to treat the wounded, and each incubator has to accommodate three or four newborns, increasing the risk of danger."

The World Health Organization pointed out that "conditions in hospitals in the Gaza Strip are deteriorating rapidly due to a shortage of staff and supplies."

Our correspondent added, "Only 15 to 20 wounded individuals leave the Rafah crossing daily, despite thousands requiring treatment abroad, and UNRWA centers no longer provide any medical supplies or medications to the citizens."

"Most people come to hospitals to charge their phones and batteries for nighttime lighting," he said.