Metropolitan Police are appealing for information after a shooting took place in Tulse Hill near Brixton, south-east London.
CCTV footage shows a man jump off a moped and chase three men down an empty road while brandishing a gun. He fired two bullets at the group.
A 20-year-old sustained a gunshot wound to his thigh and was taken to hospital by emergency services, the other men escaped unharmed.
The incident took place at 7pm on 7 February 2016.
The gunman was wearing a black full-face helmet and dark troushers with white flashings; the driver of the moped is described as having a light coloured helmet.
If you have any information, you can call police on 020 8247 4863 or Crimestoppers anonymously on 0800 555 111.