Burnley have launched an investigation after an Everton fan gatecrashed their coaches' room before Saturday's clash at Turf Moor.
Amid staggering scenes the Toffees follower was eventually led away by an irate Clarets assistant manager Craig Bellamy ahead of the visitors' 2-0 victory in Lancashire.
The fan is thought to have simply strolled from the concourse of the away end through an unguarded door moments before kick-off, startling Bellamy and other members of staff as they finalised their matchday preparations.
He is thought to have cheekily asked Vincent Kompany's No 2 for a selfie before those inside realised what was going on and demanded he hand over his phone.