A 15-year-old girl required medical treatment after being hit by a bottle thrown from the away section at Manchester City's home fixture vs Liverpool on Thursday night.
City and Liverpool have issued a joint statement condemning disorder at the game, and launched an investigation after a large number of missiles were thrown from Liverpool fans in the third tier of the Sout Stand at the Etihad Stadium, to the City fans in the first and second tiers below.
Among the objects was a small bottle, which hit a 15-year-old girl, requiring the supporter to be treated by medical staff. Greater Manchester Police say coins and a smoke bomb were also thrown.