This is the stomach-churning moment a brewery worker was caught on CCTV urinating into a huge container of malt that was set to be used to make thousands of pints of beer.

The bizarre footage was recorded on October 20 at the Tsingtao Beer Factory, in Qingdao, Shandong Province, eastern China, as a truckload of grain was being delivered.

One worker, wearing a blue uniform and a hard hat, climbed up into the truck's cargo bay and looked left and right to see if the coast is clear.

Then, apparently oblivious to the security cameras, he unzipped and urinated all over the malt. Finally, he checked again if anyone is watching and then zipped up as the footage runs out.

Local media reported that the suspect is believed to have worked for the trucking company delivering the malt. And they claim none of the contaminated grain made it through to the beer production line.

Tsingtao Beer later said: 'We promptly reported it to the police, and law enforcement is currently investigating. 'The batch of malt involved has been completely sealed.

'We are intensifying our management efforts to ensure product quality. We welcome consumers to supervise our processes.'

An investigation has been launched into the incident and police and health officials are trying to identify the man in the video clip.

Lawyer Shao Ke later told local media that the incident almost certainly breached local health regulations. Violations can lead to a simple warning or up to seven years behind bars for serious offences.