Dakota Access pipeline has first leak before fully operational

Leak raises fresh concerns about hazards to waterways and outrages indigenous groups, who have long warned of threat to environment

The Dakota Access pipeline has suffered its first leak, outraging indigenous groups who have long warned that the project poses a threat to the environment.

The $3.8bn oil pipeline, which sparked international protests last year and is not yet fully operational, spilled 84 gallons of crude oil at a South Dakota pump station, according to government regulators.