Sunderland AFC condemns the unacceptable conduct of a small minority of away supporters during Saturday's fixture at the Stadium of Light.
A pyrotechnic device was discharged in the North Stand Upper after Birmingham City opened the scoring in the 29th minute and it was subsequently thrown into the North Stand Lower.
The individual responsible for this abhorrent act has been identified by CCTV and all relevant information has now been handed over to West Midlands Police, with Club representatives continuing to directly support those impacted.
Fans are reminded that it is a criminal offence to attempt to bring a pyrotechnic device into a football stadium, or to be in possession of a pyrotechnic device at a football match.
All identified offenders will be reported to the police and prosecution could result in a permanent criminal record, which may affect employment and education status, and could result in a prison sentence.
SAFC has a zero-tolerance approach to all forms of anti-social behaviour and remains committed to creating a safe and inclusive environment for all at the Stadium of Light.