Laura Loomer: Who is conspiracy theorist travelling with Trump?

The presence of hard-right conspiracy theorist Laura Loomer alongside Donald Trump on the campaign trail in recent days has raised questions, including from some Republicans, about the influence the controversial former congressional candidate may have on him.

Ms Loomer is well-known for her anti-Muslim rhetoric and for spreading conspiracy theories, including that the 9/11 attacks were an "inside job" carried out by the US government.

She joined Trump at an event on Wednesday commemorating the attacks, raising eyebrows and prompting outrage in some US media outlets.

And on Tuesday, the 31-year-old travelled to Philadelphia on board Trump's plane for the presidential debate in the city.