Police are appealing for information on two men seen running away from the scene of the shooting on Hindrey Road, towards the nearby Pembury Estate.
One is black, officers said, while the second is light-skinned, possibly of Asian or Turkish appearance.
Police said there was as yet no clear motive for the shootings, and no-one has been arrested.
"At this very early stage we must retain an open mind regarding the circumstances of the incident and any motive," the spokesman said.
More top news
Uber has launched an advanced booking service for passengers in London meaning journeys can be booked up to 30 days in advance.
Sadiq Khan has weighed in on the debate over the burkini being banned on some French beaches saying women should not be told what to wear.
Five men who died in the water off Camber Sands were friends who had arrived to spend the day at the beach together, ITV News understands.