JERUSALEM — Images from Gaza circulating on social media Thursday showed a mass detention by the Israeli military of men who were made to strip to their underwear, kneel on the street, wear blindfolds, and pack into the cargo bed of a military vehicle.

The exact circumstances and dates of the detentions are unclear, but some of the detainees’ identities were confirmed by colleagues or family members.

At least some of the men are civilians with no known affiliation to militant groups, according to a conversation CNN had with one of their relatives and a statement by one of their employers, a news network.

The Euro-Mediterranean Human Rights Monitor posted an image of one detainment and said in a statement on its website Thursday that “the Israeli army detained and severely abused dozens of Palestinian civilians.”

“Euro-Med Monitor received reports that Israeli forces launched random and arbitrary arrest campaigns against displaced people, including doctors, academics, journalists, and elderly men,” it said.

The Israel Defense Forces has not responded to CNN’s request for comment on the images. CNN has geo-located some of the images to Beit Lahia, north of Gaza City.

The Israeli media, without indicating a source, has portrayed the images as the surrender of Hamas members. A journalist asked IDF spokesperson Rear Admiral Daniel Hagari about the images during a news conference on Thursday, saying, “We’ve seen images of many captives, Hamas terrorists, that the IDF arrested during the ground maneuvering.”

Hagari said that, in fighting Hamas, “those left in the area gradually come out.”

“We investigate and check who has ties to Hamas, and who does not,” he said. “We arrest them all and question them. We will continue dismantling each one of those strongholds until we are done.”

In a statement Thursday, Al-Araby Al-Jadeed said that one of its correspondents and several members of his family were among those detained as part of the incident portrayed in the images.

“Today, Thursday, the Israeli occupation army arrested the journalist and the director of ‘The New Arab’ office in Gaza, our colleague Diaa Al-Kahlot, from Market Street in Beit Lahia, along with a group of his brothers, relatives, and other civilians,” Al-Araby Al-Jadeed wrote.

“The occupation deliberately forced Gazans to take off their clothes, searched them, and humiliated them when they were arrested before taking them to an unknown destination, according to what the people there told us. Pictures and video clips spread showing soldiers arresting dozens of Gazans using criminal and humiliating method.”

Hussam Kanafani, the Al-Araby Al-Jadeed editor-in-chief, said in the statement that Al-Kahlot and his family were still missing.

“We will make every effort possible, in cooperation with international institutions and organizations concerned with the rights and freedom of journalists in the world, to determine the whereabouts of our colleague Diaa and release him as soon as possible,” Kanafani said.

CNN spoke with a relative of other detained men, Hani al-Madhoun, from his home in the United States.

“Israeli forces arrived on the street and called out all the men to come out, and they complied,” al-Madhoun told CNN. “This house was their place of refuge after our two homes were destroyed.”

Al-Madhoun said he was in contact with his sister, who is in Gaza.

He said that he recognized his cousin Aboud in one of the photographs and saw his brother Mahmood in a video. He said that Mahmoud is a shopkeeper and Aboud “is not involved in any activities; he helps his father in construction.” — CNN