The West Bengal Joint Platform of Doctors (WBJPD) was planning to begin a sit-in demonstration in the heart of Kolkata from Tuesday over the CBI investigation into the RG Kar hospital rape and murder case, in which two key suspects were granted bail.

The proposed demonstration of the WBJPD, an umbrella organisation of five associations, will be held till December 26 at the Doreena Crossing, an office-bearer said.

“We also demand the immediate submission of the supplementary chargesheet by the CBI,” said doctor Punyabrata Gun, a joint convener of WBJPD.