Arafat Jaradat's autopsy showed torture resulting from fractures in his body and skull while his heart was in good condition, said Issa Qaraqaa, the minister in charge of prisoners' affairs, citing the autopsy report.
"These results prove Israel killed him," Qaraqaa told a news conference.
Jaradat died on Saturday in an Israeli jail from what prison authorities initially claimed was a heart attack.
More than 3,000 Palestinian prisoners started a hunger strike in the Zionist regime's jails to protest Jaradat’s death in Megiddo prison.