BETHLEHEM (Ma'an) -- At least four men from Gaza City are facing execution in the Gaza Strip, Amnesty International said Tuesday.

The group said Nael Jamal Qandil Doghmosh could be executed at any time, by hanging, even though his family says he was tortured to make him to confess to murder.

In a statement, the UK-based rights group said Doghmosh was sentenced to death for murder in April 2011 and his final appeal was rejected on May 13 of this year.

"When his family were first able to visit him two months later, his nails had been torn out and he had burns and bruises on his body," the group said. It said he was 18 when he was arrested.

According to the Palestinian Center for Human Rights, two other men face execution by hanging and firing squad. They have been identified only as F.T.W. and J.Z.J. and have no further appeals.

A fourth man, identified only as A.M.A., was convicted of collaboration with Israel and murder. He has an appeal pending in a military court. However, Amnesty said it was concerned he will face execution if the appeal fails.

Under Palestinian law, all death sentences must be ratified by the president before they can be carried out. However, President Mahmoud Abbas has not ratified sentences carried out by Hamas in the past.

Fatah and Hamas have run rival administrations in Gaza and the West Bank since their violent split in 2007.

On April 7, the Hamas government executed Mohammed Baraka and "M.J.A." for murder as well as "W.K.J." for collaboration with Israel.

Soon after the executions, Hamas officials stated that anyone found to have collaborated with Israel would be executed as a deterrent against such "treasonous" activities, the Amnesty statement noted.