Police are still hunting for a thief who made off with £19,000 of cash and jewellery belonging to players from Pompey’s reserve team.
Fulham Football Club have promised to do all they can to catch the culprit who struck during the match in London on Tuesday night.
A bogus phsyio managed to get into the visitors’ dressing room and made off with cash, credit cards, expensive jewellery, mobile phones and designer watches.
Stars including Lomana Lualua, Manuel Fernandes and Ognjen Koroman were among 21 victims.
Head of communications at Fulham, Sarah Brookes, said: ‘We can confirm that there was an incident during the game which involved a theft from both the home and visitors dressing rooms.
‘A full investigation is currently in progress with the aid of extensive CCTV.’
The game kicked off at 7pm at Motspur Park with the man striking between 7.10pm and 7.30pm after he jumped the fence and approached a steward outside the changing rooms.
He convinced him he was Portsmouth’s physio and conned him into unlocking the dressing room door where he quickly filled up a black bag.
The thief was then seen on CCTV throwing the bag over a perimeter fence and making a call on a mobile phone.
Police think this may have been to an accomplice outside the ground.
After a few moments he jumped back over the fence and ran off.
Sergeant Simon Harding from Kingston police station, said: ‘At this time we think it is a local man but we cannot rule out the chance that it could have been a supporter travelling up with Portsmouth.
‘It was an audacious theft and one which must have been planned in advance. There is CCTV in the ground and we have him on film.
‘The ground has had minor break-ins in the past but nothing like this before.’
The stolen mobile phones and credit cards are being monitored in a hope to track the criminal.