The Croatian side had just gone behind to a Michael Keane goal when the supporters began causing a ruckus, tossing missiles onto the Goodison Park pitch and looking, for a moment, like they might overwhelm the security on hand and storm the pitch.
Both set of players were temporarily pulled off the pitch and the match was halted for a moment as order was restored, with Hajduk players actually urging their supporters to settle down.
The home side took a 1-0 advantage into half-time and added to their lead early in the second period through Idrissa Gueye.
