The operation being conducted by the Chemical, Biological, Radioactive and Nuclear (CBRN) combat team of the force is on the spot for the last over 15 hours now.
"Our teams are on the spot and efforts are being made to shift the tanker to an isolated place and render it safe. The operation is still on," NDRF Director General O P Singh told PTI from New Delhi.
A senior National Disaster Response Force official said that as per ground reports, no loss of life has been reported till now.
The tanker is said to be laden with phenoyl chloride, a dangerous chemical and NDRF men wearing special counter-CBRN protection suits have covered it with sand to contain its fumes.
The mishap had taken place around 4.30 PM yesterday after which the NDRF chief got in touch with senior authorities of Karnataka following which the teams were sent.