New Delhi, Oct 22 (ANI): Delhi Police Commissioner BS Bassi on Wednesday said security in the city had been increased ahead of Diwali. Bassi also said that the force was working on the prevention of the sale of adulterated sweets in the city. According to reports, 25 quintals of adulterated milk products were seized in Dehradun earlier this week, while adulterated sweets worth Rs one crore are said to have been seized in Maharashtra.