LUCKNOW, Nov. 22 -- A day after investigators highlighted the presence of three men in CCTV footage linked to the murder of a loan recovery agent in Indiranagar, a closer review has confirmed that a fourth person was also part of the group, two attackers on foot and two others waiting on a motorcycle a short distance away.

The development has given the investigation more clarity in the killing of 24-year-old Shashi Prakash Upadhyay, whose body was found late on Wednesday night at the Sector-8 crossing, a few hundred metres from his rented accommodation in Raghurajnagar.

Police said he had stepped out around 10 pm after receiving a phone call, and was found less than an hour later lying in a pool of blood.

Through Thursday night, invest...