Ankara, April 20 ( /Sputnik) An explosion occurred on a bus in Turkey’s northwestern province of Bursa, one person was killed and several injured, media reported on Wednesday. The explosion hit a bus carrying prison guards at around 07:30 local time (04:30 GMT), according to the Hürriyet newspaper. The cause is yet to be established. According to the prison staff’s first statement, a version of a terrorist attack is being considered. The investigation is underway. /SPUTNIK GNK