The Israeli military said nine soldiers were being held in a case of suspected abuse of a Palestinian detainee at a facility holding Palestinians arrested from Gaza during the conflict, AFP reports.

Israeli civilians protested outside a military base where the nine soldiers were being held, while several others — also in an attempt to show support — broke into a detention facility where the alleged abuse occurred.

A military spokesman confirmed to AFP that nine soldiers had been held and they “were taken for questioning” on the case.

The military said it has opened an investigation into the “suspected abuse” of a detainee at the Sde Teiman base set up for holding Palestinians arrested in Gaza since the conflict broke out.

Israeli media reported that the detainee was a Palestinian who had allegedly been abused by some Israeli soldiers at the facility.

The Palestinian Prisoners Club, a prison watchdog, accused the prison guards of sexually abusing the Palestinian detainee.