London: Chelsea have apologised after a section of their fans "embarrassed" the club by singing and jeering during a minute's silence to pay respects to the 96 victims of the Hillsborough Stadium disaster in 1989 and the death of Livorno midfielder Piermario Morosini.
The jeering occurred before kick-off in Sunday's FA Cup semi-final at Wembley Stadium, which Chelsea eventually won by thrashing London rivals Tottenham 5-1.
The tribute at Wembley was cut short because of the noise from the Chelsea end, and the London club issued a statement condemning those who failed to remain silent.
A section of Chelsea fans sang and jeered during a minute\'s silence at the Wembley Stadium during their FA Cup semi-final.
Chelsea said the club "is extremely disappointed that a very small minority of fans embarrassed the club today by not honouring the moment's silence."
"Chelsea FC believes all moments of respect should be honoured and today we pay our full respects to all those that suffered as a result of the Hillsborough disaster 23 years ago."
"The club will be working with Wembley and the FA to identify those responsible, and if we are provided with evidence that season-ticket holders or members have been involved we will take the strongest possible action against them."
Interim Chelsea manager Roberto di Matteo added that he was "extremely disappointed" by the fans' actions. "We are very disappointed that a minority, or just a few, decided to speak or sing during the minute's silence and not respect it," the Italian said.
The previous day Liverpool, who lost 96 fans in the crush before an FA Cup semi-final against Nottingham Forest in 1989, and Merseyside rivals Everton met in the other semi-final, before which both sets of fans observed a minute's silence impeccably.
Both Liverpool manager Kenny Dalglish and Everton's David Moyes praised the fans for their behaviour.
Liverpool had requested that the match against Everton should not be played on Sunday, which was 23 years to the day that the disaster occurred.
A special service was held at Anfield on Sunday when candles were lit for each of the victims.
- Chelsea thrash Tottenham in controversial FA Cup win
- Livorno players, fans pay respects to Morosini
- Italian player dies after mid-game cardiac arrest