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's 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.
Cleveland Police's dedicated football officer said on Twitter: "I've been asked by a few followers and can confirm the so called @Boro fan who urinated in the @QPRFC goalie bottle was arrested by colleagues from @MPSFootballUnit