UEFA have fined Barcelona €19,000 for the pitch invasion by supporters which occurred following their Champions League comeback victory over Paris Saint-Germain at the Camp Nou.
The fine was also issued for the “improper conduct” of Barcelona’s players, with five bookings picked up by Luis Enrique’s men during the game.
No team in UEFA club competition history had ever previously overcome a 4-0 first-leg deficit.
Sergi Roberto’s decisive stoppage-time goal sparked wild celebrations in the Nou Camp, with some supporters entering the field of play after the final whistle.
St-Etienne, Manchester United’s Europa League round of 32 opponents, have also been fined €50,000 (£43,083) after supporters set off fireworks at the Stade Geoffroy-Guichard.
The Ligue 1 side were defeated 1-0 in the second leg, with Jose Mourinho’s United progressing to the last-16 with a 4-0 aggregate win.