Two passengers trains in India were derailed in separate incidents Sunday, leaving at least 67 people dead and about 200 others injured, Voice of America reported. Rescuers in the northern state of Uttar Pradesh, the site of the first derailment, were searching for survivors in the wreckage of the Kalka Mail train that jumped the track en route to New Delhi Sunday afternoon. The cause was not immediately clear. Hours later, the second train derailed in the northeastern state of Assam, injuring another 100 people. No fatalities have been reported. Local police suspect a remote-controlled bomb caused four coaches of the Guwahati-Puri express train to be thrown off the tracks.