At least five people have been wounded when a bomb explosion ripped into a bus carrying police officers in the Turkish city of Adana on Wednesday.
In a statement, the Adana Governor said the blast was either an "improvised explosive device or a different type of bomb".
The area has been sealed off and an investigation launched into the attack.
No group has claimed responsibility for the attack so far.

FBI foils "terror plot" targeting Los Angeles
Hong Kong court finds tycoon Jimmy Lai guilty in landmark security trial
Ukraine peace talks stretch into second day at start of pivotal week for Europe
Flash floods kill at least 37 people in Morocco's Safi province
'Hero' who disarmed Bondi gunman recovering after surgery, family says