kharagpur, A road accident took place at Lachmapur under kgp (L) ps on NH 6, when Kolkata flank an oil tanker containing soap manufacturing chemicals capsized as it lost its control. Driver and helper have been rescued and they have mild injuries. Kolkata flank got blocked due to the capsized vehicle. we have seized the vehicle & investigation started, Traffic have been diverted with smooth movement, said Md. Asif sunny oc, kgp local ps.