Hamas Fatah clash in Gaza AP Sept. 2007
Hamas security officials using batons to detain Fatah supporters during clashes in Gaza City on Sept. 7, 2007. Photo by AP

An independent Palestinian rights group says the militant Hamas rulers in Gaza are targeting members of the rival Fatah group, questioning them and searching homes.

The Palestinian Center for Human Rights said in its report on Thursday that Hamas summoned a total of 50 former members of Fatah security forces this week.

Another Fatah activist reported being held for 15 days, during which Hamas officers placed a plastic bag on his head during interrogation and subjected him to loud noises.

Hamas took over Gaza in 2007, leaving the Fatah-led Palestinian Authority in charge in the West Bank.

Hamas says the charges are "false accusations" meant to disrupt reconciliation between the rival groups but notes that Hamas activists are still arrested by Fatah forces in the West Bank.