The United Nations on Thursday demanded the release of four Anadolu Agency employees detained during a raid on agency’s office in Cairo.

UN spokesman Stephane Dujarric said his colleagues were speaking with Egyptian officials “at various levels” and urging them to adhere to global human rights treaties.

“We are aware of the reports that Egyptian security forces raided Anadolu offices in Cairo and reportedly arrested four journalists, including one Turkish national. They’ve been detained in an unknown location,” Dujarric told reporters in New York of the raid Tuesday.

“We are concerned about these developments as well as about

Read more: UN bashes Egypt over Anadolu Agency detainees