Two passengers were killed and seven others injured when the Secunderabad-Bandra (Mumbai) Duronto Express derailed in Karnataka in the early hours of Saturday, a railway official said.The mishap occurred around 2.15 a.m. when nine bogies of the 2220 Secunderabad-Lokmanya Tilak Terminus jumped off tracks near Martur station, Gulbargaon the Solapur Division of Central Railway.The victims have been identified as Lata, 28 and Jyoti, 46, both bound for Pune, and the injured have been rushed to hospitals in Gulbarga.Senior railway officials have rushed to derailment site from Solapur, Daund and other places, and managed to restore the mainline rail traffic by 5.40 a.m. on Saturday.Seven coaches of the train with passengers also left the site for onward journey by 6.30 a.m. on Saturday.The railway ministry has ordered a probe into the incident.