Know why NSG commandos had to be sent to Sandeshkhali in Bengal

Amidst the Lok Sabha elections, CBI and NSG commandos are investigating the Sandeshkhali case in Bengal. Recently, a team of NSG commandos had recovered a large quantity of weapons from the house of Shahjahan's close aide Abu Talib in Sandeshkhali. CM Mamata Banerjee has expressed objection to this action of NSG commandos and CBI.