"The club can confirm that an incident occurred in the tunnel after the game at the Memorial Stadium involving players and staff from both sides.
"Swansea City's assistant-manager Graeme Jones was involved, but after being questioned by the Avon and Somerset Police was released last night pending further investigations.
"Graeme and the club have cooperated fully with the police over the matter and a further statement will be issued in due course.
"The two clubs are in constant dialogue and no further statements will be made until the matter has been fully investigated.''