The Department of Explosives and Rupantarita Prakritik Gas Company Limited will conduct their drive against illegal CNG conversion workshops at Kuril and Uttara in Dhaka and in Gazipur today, officials said. A team of the explosives department and RPGCL along with the law enforcing agencies, including RAB, will conduct the drive for the second day, they said. On the first-day of the drive in late February, five carbon dioxide cylinders were seized at Savar on the outskirts of Dhaka, they said. The drive was launched in the wake of a number of explosions of fabricated CNG cylinders in vehicles that left several people killed and scores others injured, officials said. The last accident from cylinder explosion occurred at Savar on February 15 when a truck was refilling at Energy Plus CNG Filling Station at Ganda in Savar. The accident left three persons killed and three others injured. According to the Society for Urban Environmental Protection, an NGO, at least 20 people were killed and 70 injured in CNG cylinder explosions since January 2007. At present, 1.30 lakh CNG-run vehicles ply Dhaka and elsewhere in the country. Of them, 90,000 are converted and the rest were imported as CNG vehicles, AHM Nuruzzaman, assistant inspector of the Department of Explosives said. The risk lies mainly on the converted bus, trucks and human haulers as most of them have converted their vehicles in unapproved conversion stations with fabricated or non-CNG cylinders, the official said. According to RPGCL officials, there are 110 authorised conversion workshops in the country and 80 of them are in Dhaka.