Turkey's communications authority blocked access to the social media platform Instagram on Friday, the latest instance of a clampdown on websites in the country.

The Information and Communication Technologies Authority, which regulates the internet, announced the block early Friday but did not provide a reason. Sabah newspaper, which is close to the government, said access was blocked in response to Instagram removing posts by Turkish users that expressed condolences over the killing of Hama political leader Ismail Haniyeh.

It came days after Fahrettin Altun, the presidential communications director and aide to President Recep Tayyip Erdogan, criticized the Meta-owned platform for preventing users in Turkey from posting messages of condolences for Haniyeh.

Unlike its Western allies, Turkey does not consider Hamas to be a terror organization. A strong critic of Israel's military actions in Gaza, Erdogan has described the group as "liberation fighters."

The country is observing a day of mourning for Haniyeh on Friday, during which flags will be flown at half-staff.

Turkey has a track record of censoring social media and websites. Hundreds of thousands of domains have been blocked since 2022, according to the Freedom of Expression Association, a nonprofit organization regrouping lawyers and human rights activists. The video-sharing platform YouTube was blocked from 2007 to 2010.