Toulouse replacement lock Trevor Brennan clashed with Ulster supporters before coming on to the pitch

Toulouse player Trevor Brennan is expected to be in trouble after this clash with an Ulster supporter

Ulster supporter Patrick Bamford had to be treated for a facial injury after trouble at the match in Toulouse

Supporter Patrick Bamford is examined by Ulster team doctor David Irwin

Toulouse player Gareth Thomas had to be restrained in front of Ulster supporters during the Heineken Cup match

Justin Harrison and Trevor Brennan were both sent to the sin-bin during the Toulouse v Ulster clash

Trevor Brennan grapples with Ulster lock Justin Harrison during the second half at the Stade Ernest Wallon

Ulster's Andrew Trimble is up-ended by Toulouse opponent Vincent Courrent during the Heineken Cup match

Ulster fly-half Paddy Wallace is pursued by Patricio Albacete of Toulouse

Ulster winger Andrew Trimble in full flight during his team's 28-13 defeat away to Toulouse in Pool Five of the Heineken Cup