Spartak Moscow are likely to face a UEFA investigation after supporters fired a flare that narrowly missed the referee during their 1-1 draw at Maribor in the Champions League.
The Russian champions had survived Maribor's lively start to the game when a firework projected from the Spartak fans travelled more than half the length of the pitch and landed not far from referee Deniz Aytekin's feet.
Should the club be disciplined it will further compound their disappointment after Damjan Bohar's late equaliser denied them a winning return to the Champions League group stage after a five-year absence.
Second-half substitute Aleksandr Samedov gave Spartak the lead just before the hour mark as smoke continued to billow from the area in which the visiting supporters were seated, but Bohar levelled the game with a fine finish in the 85th minute to spark wild celebrations from the home crowd.
Maribor will be hard pressed to take points from their remaining five Group E games - with matches against Liverpool and Sevilla to come - but coach Darko Milanic saw his charges put in a spirited performance that might have yielded more than just a point had they taken their chances.
Martin Milec drew an early save from Artyom Rebrov in the Spartak goal when he cut inside from the right flank in the first minute and struck a bouncing shot that the goalkeeper could only parry away.
Play swung from end to end in the game's early stages and Andrey Eshchenko blazed a shot over the crossbar after a dangerous run by Quincy Promes, but the home side were in the mood to attack and Valon Ahmedi let fly from 25 yards after 10 minutes, forcing another good save from Rebrov.
Spartak's quality began to show after 25 minutes when a flowing passing move saw Mario Pasalic freed Promes, whose flick put Eshchenko one-on-one with Jasmin Handanovic, but the winger lofted his shot high of the target.
Promes is Spartak's top goal-scorer this season and he almost added another to his tally with a dipping drive from 20 yards that flew just wide on the half hour mark, as Maribor ended the first half with little of the energy and verve they had shown early on.
Spartak brought on Samedov at half-time and four minutes into the second half he danced into the penalty before chipping a shot narrowly over the crossbar.
His introduction proved decisive 10 minutes later when he latched onto the rebound after Handanovic saved Fernando's shot and rifled the ball high into the net, prompting explosive celebrations from the Spartak supporters.
Bohar almost equalised immediately with a close-range header that Rebrov saved at full stretch, and Maribor full-back Mitja Viler sent an angled drive whistling past the post after 68 minutes as the hosts pushed hard to salvage a point.
Fernando should have made it 2-0 when Luiz Adriano teed him up for a one-on-one with Handanovic, but the Brazilian midfielder dragged his shot wide. Promes tried his luck with an audacious free-kick from 30 yards, but Handanovic rose well to save.
But Maribor never gave up and with five minutes left they were rewarded when Martin Kramaric played the ball out to Bohar on the left side of the Spartak penalty area and the midfielder unleashed an unstoppable drive into the far corner of the net to earn his side a precious point.
|Djokovic struggles continue as Cilic, Dimitrov progress|
|Usain Bolt not ready for top level, says Stoger|
|Ronaldo is a goal – Santos hails Portugal star|
|Pro Bowl TE Bennett announces retirement from NFL|
|Broncos acquire Veldheer from Cardinals for sixth-round pick|
|Dustin Johnson smashes 489-yard drive at Match Play|
|Celtics star Irving to have procedure on knee|
|Giants lose Bumgarner, Samardzija to injuries days before season opener|
|Dybala and Icardi World Cup chances not over yet, says Sampaoli|
|Reed dumps Spieth out, Harman accounts for McIlroy|
|James: Colombia can´t get carried away with France win|
|Italy to wait on Verratti injury|
|Lopetegui happy with Spain showing against ´physically stronger´ Germany|
|Warriors rampant, Weir inspires Edinburgh|
|Messi has had hamstring injury for ´some time´|
|Forward-thinking Southgate makes case for England´s defence|
|McLeish to ring Scotland changes for Hungary clash|
|Rodrigo dedicates Spain goal to Canizares after death of son|
|France were taught a lesson in aggression by Colombia, says Deschamps|
|Late Simmonds penalty breaks Bath hearts|
|Ronaldo up to third on all-time list after Portugal brace|
|Cowboys boost receiving corps with Allen Hurns signing|
|Tigers cling on to win Elland Road thriller, Saints respond at Hull KR|
|Meunier expects PSG will sack Emery|
|Tony Romo finishes last in PGA Tour debut|
|Germany friendly emotionally important for Brazil - Tite|
|France 2 Colombia 3: Quintero completes stunning comeback in Paris|
|Portugal 2 Egypt 1: Late Ronaldo double stuns Salah-inspired Pharaohs|
|No Messi, no Magic – Sampaoli playing a risky game ignoring Dybala|
|Netherlands 0 England 1: Lingard strikes to ruin Koeman´s debut|
|Scotland 0 Costa Rica 1: McLeish suffers defeat in first game back|
|Argentina 2 Italy 0: Banega & Lanzini win it for Messi-less Albiceleste|
|Germany 1 Spain 1: Muller wonderstrike cancels out Rodrigo opener|
|Curry available to make Warriors return against Hawks|
|Paire ousts out-of-sorts Djokovic in Miami|
|Ibrahimovic: If I want to go to the World Cup, I´m there|
|Michael Bennett indicted for allegedly injuring paraplegic woman|
|Svitolina ends Osaka winning run in Miami|
|Australia not ready for World Cup – Van Marwijk|
|Turkey 1 Republic of Ireland 0: Topal strike downs O´Neill´s men|
|Norway 4 Australia 1: Kamara hat-trick spoils Van Marwijk´s Socceroos bow|
|Aguero to miss Argentina friendlies|
|Monaco rubbish reports Rybolovlev will sell club and buy AC Milan|
|Harman sends McIlroy packing in Austin|
|Messi misses Argentina-Italy game|
|Neuer cautious over comeback date despite taking positive steps|
|Lehmann slams ´disgraceful´ Newlands abuse|
|Di Maria predicts ´big change´ at PSG after Champions League failure|
|Everton defender Holgate warned for alleged homophobic tweets|
|Russia 0 Brazil 3: Coutinho on target in routine win|
|Icardi must keep performing to earn Argentina recall, says Zanetti|
|Different place, same Zlatan - Ibrahimovic determined to maintain winning DNA with LA Galaxy|
|Injured Cavendish out of Commonwealth Games|
|Experience the key for Juventus in title race, insists Trezeguet|
|Stanikzai plays through the pain to guide Afghanistan to glory|
|Lyon and Paine frustrate Proteas after Morkel joins 300 club|
|Messi lacks Maradona´s charisma, claims Batistuta|
|Usain Bolt claims he´ll return to Dortmund|
|Trezeguet confident Pogba will shine at the World Cup|
|Ibrahimovic departs Europe with remarkable haul of league titles|
|´Very, very happy´ Lanzini loves West Ham amid transfer talk|
|LA Galaxy confirm Ibrahimovic arrival|
|Pressure off soaring Falcons, says Flood|
|Afghanistan edge out Ireland to secure World Cup spot|
|Age no barrier to Messi brilliance - Kluivert|
|Japan 1 Mali 1: Late Nakajima strike earns a draw|
|Record-breaking Stockdale named Six Nations´ top player|
|Warner in verbal altercation with fan following dismissal|
|Uruguay 2 Czech Republic 0: Suarez scores 50th international goal|
|I choose the Galaxy! - Ibrahimovic confirms LA switch|