Three persons, including an army officer and a jawan, were killed today in a landslide at Kedardanda area located in the higher reaches of Uttarkashi district of Dehradun. Uttarkashi SP said, a Subedar Major, a jawan and a local porter were killed after being caught in the landslide when a five-member Army team was returning from routine patrolling of Kedar peak.He said,a Disaster Response Force contingent has been dispatched to the spot to help in rescue operations.