The four accused have been identified as Amitkumar Jha, Navnitkumar Singh, Deva Panjiar and Roshankumar Panjiar, police said adding that all of them were aged between 30 and 35 years.
"On December 21 last year, these four accused had snatched a service pistol of police constable Gangesh Kumar and shot him dead while he was on patrol duty. The deceased was attached to Rosada police station in Samastipur town in Bihar," Additional Superintendent of Police (Thane rural) Sangramnsinh Nishandar told reporters here today.
Even though Bihar police later recovered the pistol, the accused were at large, Nishandar said adding that the the four accused wanted the service pistol to carry out criminal activities.
Following the incident, Bihar police had formed a special task force to nab them and were in constant touch with various police stations across the country, Nishandar said.
During the course of investigation DSP of Samastipur in Bihar got a tip-off that the accused were in Shirdi town in Maharashtra and that some of the accused had even asked their family members to deposit some cash into a bank account.
Police came to know that the bank account number given was from Bhiwandi town. Thane police traced the whereabouts of the account-holder, who was later taken into custody. During the interrogation, he revealed that the four accused were in Kalyan to board a train to Patna.
A trap was laid at Kalyan railway station last night and around 2 am, a police team led by Local Crime Branch Inspector Fatesingh Patil, finally spotted the quartet and nabbed them, Nishandar said. (More)