A football match in Istanbul between Galatasaray and Fenerbahce has been postponed due to "serious intelligence", said the Istanbul governor's office on Sunday. Both Galatasaray and Fenerbahce are major Istanbul based football teams.
The governor's office said that "serious intelligence was obtained" around a potential security threat. Fans were evacuated from the stadium.
The postponing of the match comes a day after an Islamic State-linked suicide bomber blew himself up in a shopping district in the Turkish capital, killing four others and injuring 36. Three of the dead were confirmed to be Israeli citizens, two holding dual US citizenship, with the other being Iranian. An Algerian-Irish family was among the injured.
The key suspect in the blast is Mehmet Ozturk, a Turkish citizen born in 1992 in Gaziantep province, which borders Syria. He was said to have had links to the fundamentalist group IS (Daesh), operating in Syria. Five other men are said to have been detained by Turkish authorities.