This is an archived article that was published on sltrib.com in 2015, and information in the article may be outdated. It is provided only for personal research purposes and may not be reprinted.

Ankara, Turkey • A local mayor in Istanbul says an explosion on a highway overpass near a subway station was caused by a bomb.

Atilla Aydiner, the mayor for Istanbul's Bayrampasa district, also said five people were wounded in the explosion on Tuesday.

Earlier, Istanbul's governor said one person was slightly injured in the blast.