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.
|Nice prepared for ´likely´ Balotelli departure|
|Wales captain Jones set to miss summer Tests|
|Germany defender Halstenberg extends RB Leipzig contract|
|No offers for Roma´s Alisson, says Monchi|
|Constant compliments guarantee defeat, claims Inter boss Spalletti|
|Scoring 100th Serie A goal at Sampdoria was ´destiny´, says Icardi|
|Stoger happy with Gotze response after public criticism|
|AC Milan 3 Chievo 2: Silva spares Rossoneri once more|
|Silva confident Neymar´s future is at PSG|
|´Shameful´ PSG cannot buy a team, says Balotelli|
|All Black Squire suffers broken thumb|
|Everton goal hero Tosun glad Palace move fell through|
|Wigan Athletic 0 Southampton 2: Hojbjerg and Cedric give Hughes first win|
|Pistons got absolutely screwed - Van Gundy slams officiating in loss to Trail Blazers|
|Selection shake-up not down to Ashes drubbing - Strauss|
|Fiorentina rename training ground after late captain Astori|
|Usain Bolt issued Commonwealth Games warning to Yohan Blake|
|Borussia Dortmund 1 Hannover 0: Batshuayi the difference again for Stoger´s men|
|Nice 1 Paris Saint-Germain 2: Alves earns late victory for runaway leaders|
|Icardi 100: Inter captain´s Serie A landmark in Opta numbers|
|Sampdoria 0 Inter 5: Four-goal Icardi demolishes former side|
|Gray´s tackling ton and Italy´s woeful run - the Six Nations in Opta facts|
|Van Gaal: Heynckes can become a Bayern Munich god|
|Real Madrid without Ramos for Girona test|
|South Africa include Morris & Olivier for remainder of Australia series|
|Icardi reaches 100 Serie A goals against former club Sampdoria|
|Ireland Grand Slam heroes denied homecoming by weather|
|Cardiff trip to Derby postponed due to snow|
|Ogbonna gets Italy call as cover for doubtful Chiellini|
|Sunderland suspend Gibson after drink-driving charge|
|Manly claim record Eels thrashing, Knights win late again|
|Winning FA Cup is not important, claims Chelsea coach Conte|
|No one will be compared to me – Cristiano Ronaldo|
|LeBron James: Cavs worried about Lue health|
|F1 2018 Pre-Season Report: Red Bull|
|F1 2018 Pre-Season Report: Force India|
|Melbourne Victory 5 Central Coast Mariners 2: Berisha leads rout with hat-trick|
|Clarke breaks three vertebrae, Greipel has collarbone surgery|
|Waratahs blitz Rebels after scoring 38 unanswered points|
|Del Potro relishing Federer showdown|
|Australia to host two games against Team USA in 2019|
|Grizzlies snap 19-game losing streak, LeBron´s triple-double lifts Cavs|
|McIlroy suggests limiting alcohol sales after Bay Hill abuse|
|Marotta dismisses Allegri-PSG links as Juve focus on Can|
|MLS Review: Champions Toronto still winless, Atlanta crush Whitecaps|
|Lukaku: A lot of players will join Manchester United next season|
|I feel like I just woke up – Indian Wells finalist Federer explains slow start|
|High-flying Reds win third straight in Buenos Aires|
|Salah and Liverpool don´t fear Man City: We´ve beaten them!|
|What can I lose? - Mourinho defends criticism of Man Utd players|
|Mourinho accuses Manchester United of being scared to play|
|Mourinho delivers stinging Shaw criticism after FA Cup win|
|Haskell: England not good enough during Six Nations|
|Allegri waits on Chiellini update after Juve´s SPAL stalemate|
|Stenson leads by one with DeChambeau and McIlroy lurking|
|Racing put pressure on leaders Montpellier as Toulon are toppled|
|Klopp eases concerns over Can´s back complaint|
|Six Nations defeats make no difference to England mindset – Hartley|
|Matic was an island of personality - Mourinho questions United mentality|
|Del Potro demolishes Raonic to set up Federer final|
|He´s getting quicker on the Zimmer frame – Schmidt jokes about Best future|
|SPAL 0 Juventus 0: Scudetto charge halted by Serie A strugglers|
|Manchester United 2 Brighton and Hove Albion 0: Lukaku & Matic book semi-final spot|
|Fresh rib fracture for Cavendish but ´no serious injury´ after crash|
|Unbeaten Federer fights back to reach Indian Wells final|
|Klopp: Salah could be among world´s best, but don´t compare him to Messi|
|Woods hopes to still be within reach at Arnold Palmer Invitational|
|Championship Review: Wolves on the charge as Monk lifts Birmingham´s spirits|
|Twickenham boos will ´put me to sleep at night´, Jones claims|
|Salah threatening Rush´s record for goals in single Liverpool season|