West Midlands Police have made arrests after the pitch invasion at Villa Park on Saturday.
Police have made 17 arrests related to Aston Villa's FA Cup win over West Bromwich Albion.
Seats were thrown from the Albion section and Villa supporters invaded the pitch twice as Tim Sherwood's men beat the Baggies 2-0 on Saturday to reach the semi finals.
The Football Association is poised to start its own investigation into the problems which marred Villa's win, which the police will support.
"We carried out a large policing operation for the FA Cup yesterday evening (March 7) to ensure supporters could enjoy the game in a safe environment," Chief Superintendent Chris Johnson from West Midlands Police said in a statement.
"During the course of the operation 17 men were arrested for various public order offences. An investigation has been launched to identify people involved in a disturbance before the match at the Witton Arms pub.
"Anyone who saw what happened should contact police on 101 or call Crimestoppers, anonymously, on 0800 555 111.
"We will also be supporting the Football Association to identify people involved in pitch invasions that happened at the end of the match."