President Donald Trump has been mocked for appearing to have coloured in the US flag incorrectly during a visit to a children’s hospital in Ohio.

The president was on a visit with Melania Trump and his health secretary Alex Azar when he joined young children in Columbus in colouring a template of the Star-Spangled Banner.

In pictures posted by Mr Azar on Twitter, Mr Trump is seen to have erroneously coloured one of the stripes using a blue felt-tip pen.

The stripes are white and red.

After a while the picture was picked up by a teacher on Twitter who wrote:

“The president has colored his flag wrong. That is all.”