Paris Saint Germain have roundly condemned the unsavoury incidents that marred the celebration of their first Ligue 1 crown in 19 years.
Bernard Boucault, the Paris police commissioner, confirmed to several media outlets that 30 people had been injured as a result of the unrest, including three members of the security forces.
He also added that 21 people had been arrested for throwing projectiles and causing damage as fans and riot police clashed on Place du Trocadero, which is near the Eiffel Tower.
And in a statement published on their official website on Monday evening, PSG said: "Today should have been a day of celebration for the city of Paris, for the club, our fans and partners.
"The party was spoiled by a few hundred troublemakers who have nothing to do with football and even less with those that fill the Parc des Princes on match days with such passion and enthusiasm and in total security.
"All the members of the club, the players and the directors, express to all those loyal and passionate fans their heartfelt regret that today's trophy presentation ceremony had to be cut short.
"The celebrations will continue this Saturday at the Parc des Princes for the Ligue 1 match against Brest, when the club and its fans will unite in the joy of Paris Saint-Germain's first league title in 19 years.
"Paris Saint-Germain is more determined than ever to build a huge European club, worthy of the French capital, and far removed from those intent on trying to destroy that dream."
Carlo Ancelotti's men sealed their first domestic league crown since 1994 with a 1-0 win at Lyon over the weekend.
The 21-year-old, who missed all of last season through injury, was sidelined for several weeks after Arsenal's defeat to Tottenham in March, and has been on the bench for the Gunners' last three league games.
On Monday, Wenger confirmed the procedure, which will remove the pin inserted previously, but said the England midfielder would be set to return for Arsenal's pre-season tour of Asia.
"He will have small mild surgery after the season. At the moment Jack plays with painkillers and I use him only when it is really needed," he said.
"It is a very small, small, small one (operation), taking out a pin. It is a two to three weeks job. It will not be a problem."
The operation will rule him out of England's friendlies against the Republic of Ireland and Brazil, on May 29 and June 2 respectively - a major blow for Roy Hodgson who names his squad on Thursday.
And Wenger admitted the Arsenal playmaker will be disappointed.
"Of course (he will be disappointed), but he will go (to Brazil) next year," he added.
Wilshere is expected to be on the bench again on Tuesday when Wenger's side face FA Cup winners Wigan, a game that could see them move into fourth place should they claim all three points.
"We are on a great run, a remarkable run. We have a good spirit, a good understanding within the squad, so let's just continue to play," Wenger added.
"Wigan is a bit repeated every year, they recover always in the period where everybody says they are finished," said Wenger.
"Of course they get out in recent years every time - just - but when you play with that fire every year it can be dangerous.
"What Wigan have done as well is always discover players, you have to give them credit for that, with a small budget they find very good players and so that is sad of course if they go."
