The incident took place on Friday afternoon in Washington DC.
Witnesses saw a commotion on the grounds of Donald Trump's residence as security officers rushed to the scene.
According to
NBC News, The White House went on lockdown on Friday, when a vehicle struck the security barrier outside the building.
Donald Trump is currently hosting Australian Prime Minister Malcolm Turnbull at the White House.
The US Secret Service have been tweeting updates of the incident as it happened.
https://twitter.com/SecretService/status/967135001627283457
https://twitter.com/SecretService/status/967134583648071680
https://twitter.com/SecretService/status/967136411471302656
https://twitter.com/SecretService/status/967138767508267009
More to follow.
