A CRIMINAL investigation is underway after a sectarian flyer surfaced online days before the Old Firm match.

Urging Rangers supporters to march “before this Sunday’s match against the Fenians,” police are now appealing to fans not to attend it.

The flyer surfaced on Facebook this week.

It shows a silhouette image of someone wearing a green-and-white hooped jersey being kicked in the head while on the ground, surrounded by text reading: “Good night, green white.”

READ MORE: Old Firm top cop's warning to supporters

It adds: “The Union Bears have organised a fans march to Ibrox before Sunday’s game against the Fenians.

“The march will leave the Kinning Park Louden Tavern at 10.45am.

“Wearing dark coloured clothing is encouraged. Please pass this on to fellow Rangers supporters.

“UB07.”

Evening Times:
The advert doing the rounds on Facebook

The advert was posted online on Tuesday by the Union Bears page and has received almost 1,000 shares.

Celtic fan pages have since called for Police Scotland to take action against the Union Bears, with a statement from The Celts Are Here blog saying: “The time to act on [this] is now, when the incitement is so explicit as it is with the Union Bears’ poster.

“Waiting until after the called-for assaults have taken place is not an option.

“There is no place for this in football and there is no place for this in Scotland.”

READ MORE: Glasgow East End mum who struggled in mixed Rangers and Celtic family wows with powerful sectarianism painting

Match commander Superintendent Alan Murray revealed Police Scotland is now looking into the controversial flyer.

He said: “We are aware of a planned fans’ march on Sunday and would urge supporters not to join in.

“Large groups of fans moving together can cause problems and I am asking fans to make their way to the ground as normal.

“We are aware of the content of the advert connected to the march, which permission has not been granted for.”

“A criminal investigation has been launched into the wording and logo of the advert,” he added, reports The Scottish Sun.