Two women were removed from a British Airways plane at London Heathrow after they reportedly began fighting over a Donald Trump “Make America Great Again” hat one of them was wearing.

The altercation is said to have broken out as they and other passengers waited to board a flight to Austin, Texas.

One of the female passengers reportedly took issue with a red cap bearing Trump’s “Make America Great Again” slogan that was being worn by the other woman waiting to board, and demanded she took it off. She refused, and punches were allegedly exchanged in front of other passengers. The confrontation appears to continue aboard the plane.

The captain called for help, and police arrived to remove the women from the flight which was two hours behind schedule when it eventually left at 2.10 pm.

The Met police has confirmed it is investigating.

A British Airways spokesperson said in a statement: “We apologised to our customers for the delay and got them on the way as quickly as possible.”