India, Aug. 6 -- Three detained juveniles at a government observation and juvenile home in Rajasthan's Sri Ganganagar district allegedly thrashed a 63-year-old security guard to death with a wooden plank on Wednesday evening, police said on Thursday.

The guard, Sahab Ram, a resident of Ambe Vihar Colony in Sri Ganganagar, suffered severe head injuries in the attack and died on the spot. Police said the three juveniles were lodged at the observation home in connection with two murder cases and one under the Narcotic Drugs and Psychotropic Substances Act.

Police superintendent Harishankar said Ram was killed during preparations for the Independence Day celebrations. "Sahab Ram was on his way to collect tools from another security guard to...