A diary recovered during a search at the house of drug kingpin Vishal alias Phalli Gupta on New Narsala Road in Indra Nagar could help the Crime Branch identify more drug smugglers and distributors operating in Nagpur. Police are examining the diary for contact details and other clues linked to the drug supply network. The search was conducted in connection with the seizure of mephedrone (MD) worth Rs 1.54 crore.