Merseyside Police detained one man after trouble flared during Thursday night's Europa League playoff tie between Everton and Hajduk Split at Goodison Park.
The disturbance occurred in the away end during the first half of Everton's 2-0 win, with missiles being thrown and advertising boards 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 referee Ivan Kruzliak and the game was halted for several minutes.
The man was detained for pitch encroachment but no further arrests were made, Merseyside Police confirmed, and the rest of the match and its aftermath passed by without notable incident.