Lewis Williams, aged 20, was gunned down on Wath Road, Mexborough, at around 5pm yesterday.
A 17-year-old boy is being held on suspicion of murder after being arrested in the early hours of this morning.
Here is everything known about the killing so far.
5. EVIDENCE
Police officers are trawling through CCTV footage in and around Mexborough and are carrying out house-to-house enquiries in a bid to establish exactly who was involved in the killing. Photo: Marie Caley
6. ARREST
A 17-year-old boy was arrested on suspicion of murder in the early hours of this morning and remains in police custody. Photo: Marie Caley
7. INVESTIGATION
Residents have been warned to expect an increased police presence in Mexborough over the coming days following the shooting, which has been described by Supt Neil Thomas as a 'horrendous incident'. Photo: Marie Caley
8. TARGETED
Detectives are treating the shooting as a 'targeted' attack and want anyone with information to call 101 and quote incident 495 of January 11. Photo: Marie Caley