LUCKNOW, Sept. 21 -- At around noon on September 12, a Lucknow businessman was allegedly stopped near his Krishna Nagar office by men posing as policemen, forced into his own car at gunpoint and driven for nearly 650 km across Uttar Pradesh over the next nine hours as the gang demanded ransom from his family.

The journey took him towards Agra and back to Lucknow, with the gang allegedly stopping in Kannauj to collect Rs.13 lakh in cash and gold and silver jewellery from his driver before abandoning him near Shaheed Path, police said.

Nearly a week later, the Krishna Nagar police and surveillance team arrested six alleged members of the interstate gang and recovered two country-made pistols, three cartridges, Rs.2.5 lakh in cash, an SUV,...