Group: Investigate man's death in Hamas detention

A Palestinian rights group is demanding an investigation into the death of a man who appears to have been tortured by the Hamas militant group.

The Gaza-based Palestinian Center for Human Rights says the man's captors beat him and forced him to change his testimony. It was not immediately clear what kind of case security services were investigating.

The group says that days later, he died in a Gaza hospital from blows to his head. The man was not believed to be affiliated with any opposition group.

Rights groups frequently charge that Gaza's Hamas rulers use detentions and beatings to intimidate opponents. The rival Palestinian Authority in the West Bank has been accused of using similar methods to suppress opposition. A Hamas official said the matter is under investigation.