POMPEY administrator Trevor Birch has asked fans to stop their lengthy protests after the final whistle - because it’s costing the club money.
He again praised the level of support fans have showed their club in light of its off-field financial troubles.
On Saturday fans remained at Fratton Park until an hour after the match had ended.
Mr Birch said: ‘At the same time, I think everyone recognises that for the good of the club things don’t go too far. Fans had a sit-in in the centre-circle after the Middlesbrough match and there were reports of some unsavoury comments being directed at stewards.
‘We have to remember we are all in this together and that if it had not been for the loyalty of the club’s staff, who are owed wages but still keep turning up for work, we would not even be able to stage matches.
‘But a separate, significant issue is that it is actually costing the club money when supporters stay behind after games.
‘We have a duty of care to fans to have stewards and medical teams in the stadium while any spectators are still present, and this inevitably incurs extra costs to the club that it can ill afford in the current circumstances.
‘So thank you again for the support at the Leeds and Middlesbrough games – the players and staff have really appreciated it.
‘But in the best interests of the club I would like to politely ask that from Bristol City’s visit to Fratton Park on Saturday week, and for the remainder of the season, everyone concentrates that incredible support on the 90 minutes when the players are on the pitch.”