Burglars gained entry into Jasnathraj Sohanraj Jewellers and Pawn Brokers store on Mysore Road by digging a tunnel and decamped with jewels and other valuables. The burglary seems to be have occurred on Friday night and the incident came to light when the owner Suryaprakash entered the shop on Saturday morning, police said. The police trying to ascertain if the shop had a CCTV.