BETHLEHEM (Ma'an) -- Reporters Without Borders on Thursday called on Israel to release a Palestinian radio journalist and explain the reasons for his "arbitrary" arrest in Hebron last week.

Soldiers detained Sharif Rajoub in the village of Dura on June 3, his brother Mahmoud told Ma'an at the time. The Al-Aqsa radio reporter was taken to an unknown destination.

“If the Israeli authorities say nothing or prove unable to provide valid grounds for Rajoub’s arrest, we will have to regard it as yet another deplorable attempt to gag the Palestinian media”, Reporters Without Borders said.

The group pointed out that although Rajoub's station is affiliated with Hamas, there is no indication Israel intends to charge him or that the grounds for his arrest are connected to Israel's security.

Asked about Rajoub's arrest at the time, an Israeli army spokeswoman said that a man had been arrested in Dura but could not provide further details about his case.

The Paris-based group reiterated its call for the release of all Palestinian journalists held in Israeli prisons and detention centers, in many cases without any charges being brought against them.

Meanwhile, Israeli forces have raided several Palestinian news outlets.

Israeli forces arrested the director of a Jenin-based satellite channel Al-Asir TV after raiding his home in May, and soldiers confiscated the station's broadcasting equipment.

In late February, soldiers raided a university institute's Al-Quds Educational TV in Ramallah-district al-Bireh and confiscated its broadcasting equipment, claiming it was interrupting legal broadcasting.

The same day, forces raided Watan TV's newsroom in Ramallah and seized transmitters.