Police are investigating after a 15-year-old girl was injured during Manchester City’s EFL Cup match against Liverpool.
On Thursday, the girl was treated at Etihad Stadium for head injuries.
Greater Manchester Police said they were also looking into an assault near the intersection of Ashton New Road and Alan Turing Way.
According to the police, a man was also arrested for a racially aggravated public order offense.
Two more men were detained on suspicion of attempting to throw a pyrotechnic into the ground.
Manchester City defeated cup holders Liverpool 3-2 in the final.
“We are aware of a number of objects, including coins and a smoke bomb, that were thrown during the match,” said GMP match commander Supt Gareth Parkin.
“We will investigate the incidents and review the night’s surveillance footage.
“Obviously, throwing objects in a confined space can be dangerous, with serious and sometimes disastrous consequences.”
In a joint statement, Manchester City and Liverpool said the incidents were “wholly unacceptable” and “hugely disappointing”.
The clubs also stated: “These incidents will be thoroughly investigated, reported to the police, and those found to be responsible will face the sanction process of their respective club.
“Liverpool and Manchester City are fully committed to collaborating to eliminate these issues from our games. They don’t belong in football.”