HR Manager Zeeshan Afzal was fatally shot outside an ice cream shop in Block 14, Gulistan-e-Johar on September 1
Four suspects of robberies, kidnapping for ransom, and drug dealing were arrested
One of the arrested suspect was later killed in alleged police encounter
Police said accused were habitual criminals and were wanted in several criminal cases
a police patrol team signalled two suspected motorcyclists to stop near Nazimabad No-1 but they opened fire