Manchester City have apologised and launched an investigation after an incident involvingAston Villa goalkeeper Robin Olsen duringa pitch invasion by fans of the newly crowned Premier League champions.City came from two goalsdown to beat Villa 3-2 on Kaleb Wesson Jersey Sunday and clinch the league title in dramatic fashion at the Etihad Stadium.That led to scenes of jubilation from the home fans at the final whistle, with supporters pouring onto the pitch to celebrate a fourth title in the space of five seasons.However, Villa manager Steven Gerrard claimed goalkeeper Olsen had been attacked.When asked if Andrew Bogut Jersey his players had avoided any harm, Gerrard told reporters: The answer is no. My goalkeeper was attacked. I think those questions should go Jeremy Lin Jersey to Pep and Manchester City.Villa reportedly said Olsen was struck on the back of the head, though they were unaware if this was intentional.City swiftlyi sued a statement condemning what they called an a sault. Manchester City would like to sincerely apologise to Aston Villa goalkeeper Robin Olsen, who was a saulted after the final whistle at todays match when fans entered the pitch, the statement read.The club has launched an immediate investigation and once identified, the individual responsible will be i sued with an indefinite stadium ban.This incident comes on the back of a James Wiseman Jersey spate of pitch invasions up and down the football league in England.Earlier this week, a Nottingham Forest fan was jailed for a saultingSheffield United striker Billy Rick Barry Jersey Sharp, while on Thursday, Everton fans flooded onto the Goodison Park pitch after their 3-2 comeback win over Crystal Palace sealed Premier League safety.Palace bo s Patrick Vieira was confronted by a supporter while walking acro s the pitch, and appeared to lash out, seemingly aggravated by the fans behaviour.