Vile fan seen PEEING in cup and splashing supporters below as police launch investigation

A YOB was caught on film seemingly urinating in a cup and splashing fans underneath during a football match in Mexico.

The sickening incident took place on Sunday during the Liga MX match between hosts Monterrey and Tigres at the Estadio BBVA.

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A vile fan, who wore the colours of the visiting team, appeared to be peeing inside a paper coffee cup while looking around him and then dropped the contents to supporters below.

The man in question then appeared to be laughing and shouting at everyone watching from underneath.

According to , Mexican authorities have launched an investigation looking for the alleged perpetrator.

And the police will check the ground's archives that include photos fans had to take of themselves before entering the premises.

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Mexico's top flight requires all supporters over the age of 12 to submit a selfie and personal data via the Liga MX FAN ID platform.

Under those regulations, anyone attending a football match must take a selfie.

They then have to scan their legal identification document into a mobile app.

Fans attending the game also witnessed immense drama unfolding on the pitch as well.

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Monterrey and Tigres played out an intense 3-3 draw, which also saw the visitors' ace Javier Aquino getting sent off.

Tigres set the match alight barely a minute after kick-off as they opened the scoring with Juan Brunetta.

However, Monterrey equalised only seven minutes later with Luis Romo.

But Fernando Gorriaran took the visitors back to the locker room with the lead after hitting the back of the net in the second minute of stoppage time.

Brunetta completed his brace just a minute into the second half and looked set to hand Robert Siboldi's side a big win.

However, Monterrey got back in the game on 61 minutes with Gerardo Arteaga.

And Fernando Ortiz's men equalised in the 10th minute of stoppage time thanks to German Berterame.