A Chelsea steward is receiving treatment in hospital after being injured in an incident in which several missiles were seen to be thrown from the crowd towards the pitch.
Chelsea say the steward took a fall as Manchester United players celebrated the winning goal in their controversial 2-3 win at Stamford Bridge, and that they are 'investigating all the incidents' around this 'including the possibility of missiles being thrown'.
The incidents followed Javier Hernandez' winner in the 77th minute, when United players went to celebrate with the forward in the corner of the Matthew Harding and West stands.
There seemed to be some goading of the home fans by some of United's players, and many people reported seeing items being thrown towards the pitch.
These included several coins and, according to many sources in several parts of the ground, what looked like part of a seat. Some also said they saw an item that looked like a match programme, and one or more bottles.
Eyewitnesses said that the steward was seen to 'crumple' to the ground – it has been confirmed he received an injury to his leg.
He received treatment from medics, which continued until full time – when he was seen to leave Stamford Bridge in an ambulance.
Chelsea lost 2-3 after having both Branislav Ivanovic and Fernando Torres sent off – the latter for a second bookable offence relating to simulation. Replays showed Torres had clearly been tripped before he fell.
The Hernandez winner was also shown to be three yards offside.
Meanwhile, Chelsea tonight made a formal complaint against referee Mark Clattenburg after accusing him of using "inappropriate language" to two of their players in the controversial defeat.