At least 33 people were killed and 17 injured when a train rammed into a bus at an unmanned crossing in Etah in Uttar Pradesh in the wee hours today. The accident occurred at Kanshiramnagar at around 2 am today when the train was on its way from Mathura to Chapra in Bihar, railway sources said.33 people were killed and 17 injured in the mishap. The ill-fated bus was carrying a marriage party, they said.PM Manmohan Singh expressed extreme grief at the loss of life and announced ex-gratia relief of Rs 2 lakhs for the kin of each person killed, Rs 50,000 each for seriously injured and Rs 10,000 each for those with simple injuries. He also ordered an inquiry by Railway Safety Commissioner into the accident.Singh who holds the portfolio of railways directed Railway Board Chairman Vinay Mittal to proceed to the site of the accident.