Video: West Ham's final game at the Boleyn Ground marred by attack on United team bus
West Ham's final appearance at Upton Park has been marred by violence after supporters pelted the Manchester United team bus with missiles as it made its way to the venue.
As throngs of home fans gathered outside the ground, which will close following the game ahead of a summer move to the Olympic Stadium, United's coach could not get through after already arriving later than anticipated.
When it did arrive, a number of items were thrown from the group of West Ham supporters including bottles, and it was announced kick-off would be shifted from 7:45pm to 8:30pm.
With post-match celebrations expected to last for up to 45 minutes, the delay could mean fans do not start flooding back onto Green Street until 11:00pm.
Speaking about the incident, Manchester United captain Wayne Rooney said: "The coach got smashed up but we'll just have to go and prepare and get on with our job.
"It's not for me to say, I'm sure you'll see. I'm sure West Ham will be disappointed with their fans.
Chris Smalling in the team bus pic.twitter.com/OwUsDA5qx5— Football Fights (@footbalIfights) May 10, 2016
"We know what we have to do starting with tonight. West Ham are a good team."
Louis van Gaal said: "The images tell everything. I have seen also the police were taping.
"It is also a lot of emotions for people but for us it is the second time in London we have to start later. It's better than last time because we have received our preparation time.
"It is not the first time I have seen that. It is not so nice. The way we have been received is not the proper way of course. That makes all the influence on the players and that is a pity."
West Ham co-chairman David Sullivan said both police and match officials had been "kind" to Manchester United by delaying the kick-off.
Sullivan seemed to blame Manchester United for not having arrived earlier, rather than point the finger at Hammers fans.
"Man United should have got here at 4pm," he said on Sky Sports. "They know it's our last game. They had the same problem at Tottenham a few weeks ago. I think the police and officials have been kind. I'd make them kick off at 7.45pm if I was in charge."
He continued: "I'm gravely disappointed, more for our supporters. What people forget is they've got trains and buses to get home and we've got a wonderful, wonderful show after the game for them. Many just can't stay any more."
Tonight's game marks West Ham's final appearance at the famous venue before their move to the Olympic Stadium.