A 40-year-old night watchman was allegedly murdered while on duty at a residential building in Mumbai's Juhu. His body was discovered inside an underground water tank the following morning, prompting police to register an FIR and launch a murder investigation. CCTV footage is being examined as officers await the postmortem report

Using CCTV footage, technical surveillance and local intelligence, officers traced the suspects to Mumbra and Shivaji Nagar, where targeted operations led to the arrest of seven alleged gang members, an official said