Police have released an image following a public order offence that happened on Derby Day last October in Sunderland.
A lit flare was thrown in the concourse area of the Stadium of Light on Sunday, October 26.
Officers investigating the incident are hoping to identify the man pictured as he may be able to help them with their enquiries.
He is believed to have been in the area at the time of the offence.
The man, or anyone who may recognise him, is asked to contact Northumbria Police on 101.