About 20 passengers were killed and more than 20 others were wounded in a bus accident Friday night in an eastern Pakistani city, said reports. A fully jam-packed bus overturned owing to over-speed in Rahim Yaar Khan city of eastern Punjab province, reported state-run Pakistan Television (PTV). It said that the accident killed 20 passengers and wounded more than 20 others. PTV said that casualties could increase as several wounded passengers were in critical condition.