Coal & Cocaine Scandal: What is Bangkok's Bengal connection?

The upcoming West Bengal elections have been facing a lot of twists and turns lately. The CBI's investigation into the coal scam has reached the courtyard of Chief Minister Mamata Banerjee. Today, the CBI team is going to interrogate Rujira, wife of Mamta's nephew Abhishek Banerjee. 

Watch the video to know the details of the 'Bangkok connection'.