Kolkata, May 7 -- The West Bengal Pradesh Congress Committee on Thursday demanded an independent investigation under judicial supervision into the murder of BJP leader Suvendu Adhikari's personal assistant Chandranath Rath, seeking strict punishment for all those involved in the incident.

Rath, a former Indian Air Force personnel who had been serving as Adhikari's personal assistant, was shot dead by unidentified assailants near Madhyamgram in North 24 Parganas district on Wednesday.

West Bengal Pradesh Congress Committee President Subhankar Sarkar, in a letter addressed to West Bengal Governor RN Ravi, described the incident as a "pre-planned organised crime" allegedly carried out by professional killers.

The Congress committee strong...