According to media reports, Banerjee had had 5 pegs of an alcoholic drink before setting out to the restaurant in Thane with his family. "At the restaurant, he took another three to four pegs," a police officer monitoring the investigation was quoted as saying.
Even so, his family insists that financial issues and work- related stress are the reasons for him shooting himself. "True that the family said he hadn't got his salary in a long time, but there were no major financial problems which would have forced him to take such a drastic step. He had no problems in his married life and he was well-settled," an officer said.
Confirming that Banerjee was under the influence of alcohol, Thane police commissioner KP Raghuvanshi said that they are yet to talk to his family for more details. "We are yet to talk to his family at length," he said adding that Banerjee's mobile calls have not given them any clues.
The officer had gone out for lunch with his wife and children to Goa Portuguesa restaurant in Thane. While he was talking with his family, he suddenly took out his service revolver and shot himself in the head. When the incident took place, sources had said, "Banerjee had planned a lunch with his wife and children. He did not take his official vehicle and even asked the operator and driver to stay at home while he took a private car to reach to the hotel. They had ordered food and he was chatting with his family at around 3 pm. All of a sudden, he pulled out his service revolver and shot himself in the head. A bleeding Banerjee collapsed and fell on the ground. His children and wife cried, looking at him bleeding."
In 1996, Banerjee joined the Maharashtra state police as deputy superintendent of police. He was posted in Nanded as sub-divisional police officer (SDPO). In 2012 he was posted to ATS and headed the Data Analysis Wing of the counter-terror police agency. He had a major role in 'monitoring, recording and analyzing the mobile conversations of several suspects of the 13/7 Mumbai triple blasts.'