Watch: Quick-thinking Everton steward rescues ball-boy from crowd trouble during Europa League tie
This is the dramatic moment a quick-thinking Everton steward hauled a ball-boy out of harm's way as crowd trouble marred the Europa League tie with Hajduk Split.
The match had to be stopped during the first half as fans of the Croatia side spilled onto the pitch.
One steward carried the ball boy out the way, moments before the advertising hoarding collapsed onto the pitch.
The qualifying play-off first leg is set to be scrutinised by UEFA after the match at Goodison Park had to be stopped for several minutes.
Trouble flared at around 33 minutes of Everton's 2-0 win, with missiles being thrown and advertising boards being kicked over as supporters surged towards the pitch.
As stewards and police moved to try to bring the situation under control, the players were instructed to leave the field by Slovakian referee Ivan Kruzliak and the game was halted for several minutes.
Michael Keane's header had given Everton the lead just prior to that in the 30th minute and Idrissa Gueye doubled the advantage in the 45th minute.
Regarding the crowd trouble, Koeman said: "I was disappointed.
"I like to have it really fair, that you can play football, and we needed to stop. I don't know what happened, it was in the corner."