Celtic fans clashed with police and stewards inside AIK Stockholm's stadium amid ugly scenes in this evening's Europa League clash.

Punches were thrown between supporters and cops just a week after AIK fans also collided with stewards and fans inside Celtic Park.

One eyewitness inside the stadium told the Herald and Times that 'around 20' police officers stormed in among the Hoops contingent and there were allegedly weapons used during the melee.

It is understood there is still a heavy police presence inside the Celtic end.

A banner has also been removed by officers.

Flares were set off by visiting fans before kick-off and stewards were forced into the section to extinguish them.

Celtic have been approached for comment.

More follows.