A number of Celtic fans have been ambushed by Lazio supporters after tonight's game, according to reports online.

Around 20 people, thought to be Lazio fans, gave chase after a shuttle bus carrying Celtic supporters from the stadium broken down.

Reports on social media suggest those on board the bus were told to walk after the break down, where they were then ambushed by Lazio fans.

A BBC reporter on the scene said it is unclear if there are any serious injuries.

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Eyewitness Michael McFarlane wrote online: "Our shuttle bus broke down 1km from the stadium.

"Driver chucked us out, meaning we had to walk through the Lazio neighbourhood.

"About 20 Lazio fans sprinted from the dark and ambushed the group at the river. Got away safe, not sure about others."