At least three people have been injured in an explosion on an overpass of a metro bus stop in Istanbul.
The incident came two weeks after four foreign tourists were killed in an attack in the Turkish city.
According to Turkish Haberturk daily, the blast occurred on Saturday night near a metro bus stop in the city’s Mecidiyekoy neighborhood.
Police evacuated nearby shopping malls over the possibility of a second explosion.
A large-scale investigation, joined by anti-terror and crime scene investigation teams, has been launched.
The explosion came as Istanbul has been on edge over more possible terror attacks, since the metropolis and Ankara have come under six deadly attacks over the past eight months, with the last one hitting Istanbul on March 19 and killing four foreign tourists.
Israel and the United States have issued alerts over the past two days about the risk of fresh terror attacks in Turkey.
Police in Istanbul has been on high alert following the U.S. warning, as the city is scheduled to host the 13th summit of the Organization of Islamic Cooperation later this week.