Jaipur, July 5 -- A jeweller was assaulted and robbed by four masked men in Jaipur on Friday night, with the assailants fleeing with a bag containing around 8 kg of silver, one tola of gold and Rs.15,000 in cash, police said. According to police, the victim, Shankarlal Sharma (40), owner of Shri Shyam Jewellers in Nangalnadi main market, was returning home on his motorcycle after closing his shop when the attack took place. Police said the incident occurred a short distance from the shop when a car intercepted Sharma's motorcycle. Four men, their faces covered with cloth, stepped out of the vehicle armed with sticks and iron pipes. They allegedly tried to snatch the bag he was carrying, police said. When Sharma resisted, the attackers assaulted him repeatedly. A heavy blow to his hand forced him to drop the bag, allowing the assailants to seize it before fleeing the scene in their car. The bag contained approximately 8 kg of silver ornaments, one tola of gold and Rs.15,000 in cash, police said. Local residents informed the police, who rushed to the spot and shifted the injured jeweller to a private hospital on Kalwar Road for treatment. Kalwar SHO Surendra Singh said, "Police suspect the robbers had conducted prior reconnaissance of both the jewellery shop and Sharma's daily routine before carrying out the attack. Since a burglary at his shop around seven months ago, Sharma had been taking the shop's valuables home every night in a bag." Investigators believe the assailants were aware of this routine and targeted him accordingly. Police launched a massive search operation and imposed an A-category blockade across the Jaipur Police Commissionerate and adjoining Jaipur Rural areas. Police are scanning CCTV footage from cameras installed near the jewellery shop and along the route taken by the victim to identify the attackers. Several suspects have been detained for questioning as the investigation continues, police said....