AIR Lucknow correspondent reports, as per preliminary report of Forensic Science Laboratory Agra, use of potassium chloride, blast sulphur and charcoal were found in the explosives while six nine volt batteries were used to trigger the blast. IG Agra Range PK Tiwari said that no timer has been found from the site. He said that the investigating agencies in their preliminary findings have said that it could be the handiwork of the local criminals. But still probe was underway to find whether there was any link with In Uttar Pradesh the National Security Guards NSG and the Anti-Terrorist Squad ATS and Special Task Force STF of State police have started their investigation into the blast case in the Taj City Agra.Police has lodged FIR against unknown persons at Hariparvat police station in this connection. Meanwhile, state police has hiked the reward from 50 thousand rupees to one lakh rupees for giving clue to the explosion.AIR Lucknow correspondent reports that union Minister of state for Home Jitendra Singh on Sunday visited the blast site and met injured admitted in hospitals. He announced a financial assistance of 50 thousand rupees each from Prime Minister Relief Fund to the injured. He said centre will provide all assistance to the state government to nab the culprits involved in the blast.The Mayawati government has already announced an ex-gratia of 1 lakh rupees to the injured. The government has said that only 4 were injured in the blast on Saturday at private hospital. However, unconfirmed sources have said that 10 persons had received injuries in the blast.Inspector General of police Agra Range PK Tiwari told AIR correspondent Sunday afternoon that as per preliminary report of the Forensic Science Laboratories FSL Agra, use of potassium chloride, blast sulphur and charcoal were found in the explosives while six nine volt batteries were used to trigger the blast. He said no timer has been found from the site. He said that the blast was a low-intensity one.IGP said that the investigating agencies in their preliminary findings have said that it could be the handiwork of the local criminals. But still probe was underway to find whether there was any link with terrorist organisations.An alert has been sounded in the state and security has been stepped up in and around the Taj Mahal and other monuments in the district. terrorist organisations. Meanwhile the union Minister of state for Home Jitendra Singh also visited the blast site and met injured admitted in hospitals. He announced a financial assistance of 50 thousand rupees each from Prime Minister Relief Fund to the injured. He said centre will provide all assistance to the state government to nab the culprits involved in the blast. The Mayawati government has already announced an ex-gratia of 1 lakh rupees to the injured. An alert has been sounded in the state and security has been stepped up in and around the Taj Mahal and other monuments in the district.