A fourth person has been arrested after effigies of Rangers fans were hung from the stands during the recent Glasgow derby at Celtic Park.
The mock hangings involved two blow-up dolls, one with a Rangers scarf, the other with an Orange sash.
A 17-year-old man has been arrested over the incident and is due to appear at Glasgow Sheriff Court later.
Two men aged 27 and a 22-year-old man were previously held over the display at the game, which Celtic won 5-1.
Police have appealed for pictures and video evidence of vandalism and disorder to be sent to awhich was set up last week.
Article source: http://www.bbc.co.uk/news/uk-scotland-glasgow-west-37519374