Five people were injured when a pipe bomb exploded on an overpass near an Istanbul metro station Tuesday, the district mayor told A Haber television. Atilla Aydiner, the mayor of the Bayrampasa district on the European side of the city, was speaking on live television after the explosion hit the industrial and residential area near the height of evening rush hour. Haberturk TV earlier reported that one person had been killed in the explosion near the Bayrampasa station on the European side of Istanbul. Photographs on social media showed what appeared to be dozens of people walking alongside overground train tracks after trains had been halted.