Liverpool are looking into claims youth team player Jordan Williams mocked the Munich air disaster during last night's Europa League match at Manchester United.

Press Association Sport understands the club are aware of the allegations but have not commented publicly.

A tweet sent from the 20-year-old academy graduate’s Twitter account, responding to a video of Liverpool fans celebrating inside Old Trafford after a 1-1 draw sent their side through 3-1 on aggregate, depicted an aeroplane emoji and pair of hands clapping.

In 1958 eight United players were among 23 who died in a crash in snowy conditions at Munich Airport and some Liverpool fans have been known to taunt their arch-rivals with a song and aeroplane gestures.

The tweet was quickly deleted and Williams later apologised, claiming his account had been compromised.

“My Twitter has been hacked, I would never put anything like that to offend anyone, sorry about this,” he wrote.

There was a distasteful atmosphere surrounding the whole match last night with Liverpool supporters arriving for the last-16 second leg tie greeted with a banner with the word ‘Murderers’ and the date of the Hillsborough disaster — where 96 Liverpool fans died — tied to a bridge over the M602 in Salford.

In the closing minutes of the game a minor scuffle broke out in the top tier of the East Stand when a handful of Liverpool fans, sat among home supporters, unfurled a club flag but stewards moved in swiftly to isolate the group to prevent a further escalation after a few punches were aimed at them by home fans.