A Middlesbrough fan has been arrested for allegedly urinating in the opposition team goalkeeper's water bottle, police said.

The supporter was facing a ban from watching his team following the incident at Queens Park Rangers' Loftus Road ground during Boro's 3-0 away win.

Video shared on social media showed a man throw a water bottle onto the pitch behind the QPR goal.

Fans talking about the incident on a forum indicated the bottle may have been taken earlier by a pitch invader.