The gunman, after emptying his firearm, was caught on camera collecting the shell casings that would tie his murder weapon to the assassination with a chilling display of stillness.

In a shocking video the victim lays bleeding from a gaping head wound, the gunman calmly kept turning away to leave, before returning to shoot more as an act of overkill.

In the video footage, which has since leaked on social media, six men, including the station’s serviceman, were seen huddled behind a blue vehicle, exchanging chuckles moments before tragedy struck.

As the target of the hit and two of his mates walked away from the huddle, cheerful in their stride, out of nowhere, a man dressed in grey jeans, white sneakers and a dark-coloured t-shirt ran up to the group with his gun cocked and offloaded the magazine indiscriminately. Bizarrely, the victim’s mates, as well as the station serviceman, calmly tiptoed away from the gory scene, totally desensitised to the appalling events unfolding before them.

The gunman, after emptying his firearm, was caught on camera collecting the shell casings that would tie his murder weapon to the assassination with a chilling display of stillness.

Details about the incident are still sketchy and a response from Mpumalanga authorities was not received when this article was published.

This is a developing story.