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.
|Every player has a price – Mourinho hints at January exits|
|Good question! Guardiola ducks Sanchez link and lauds Walker|
|Six-try Ulster see off Harlequins|
|Guardiola addresses Mourinho´s tactical foul claims|
|Call the doctor! Conte protests no malice in David Luiz absence|
|Joy for Newcastle on a historic night for referee Neville|
|Sheffield Wednesday 0 Wolves 1: Brilliant Neves fires leaders seven clear|
|Premier League title City´s to lose, but Sterling wary of United charge|
|Barcelona´s Deulofeu a Clasico doubt after training injury|
|Bills QB Taylor to start v Dolphins|
|O´Mahony and Furlong sign new IRFU contracts|
|Salah ´is a player I rate a lot´, says Zidane|
|Allardyce lauds ´invaluable´ Rooney|
|Ramos fit for Club World Cup final|
|Lille sack Bielsa to end failed experiment|
|Manchester United job like Real Madrid, says Mourinho|
|Fernandinho is much better than I was, Guardiola claims|
|That Harry Kane team? – I´m over Guardiola dig, says Pochettino|
|Tuilagi and Toomua return to Leicester line-up|
|Mourinho open to January moves as Griezmann rumours swirl|
|Berizzo set for Sevilla return after cancer surgery|
|Malinga left out of Sri Lanka´s T20 squad|
|Manchester City will not go unbeaten in Premier League - Guardiola|
|Man City are the best – Pochettino braced for Spurs´ toughest test|
|Kristaps Porzingis injury update: Knicks big man says knee ´shouldn´t´ be bad|
|Conte hopeful over David Luiz´s ´serious´ knee injury|
|Neymar not an injury risk after Brazil trip - Emery|
|Bailly to miss three months due to ankle surgery|
|Klopp defends Liverpool rotation policy|
|Arsenal fan Prince Harry´s wedding day to clash with FA Cup final|
|He´s one of the best – Simeone showers Oblak with praise|
|Juventus won´t sell in-demand Pjaca, agent claims|
|Bolasie in line for Everton return after long-term injury|
|Bedene to switch back from Britain to Slovenia|
|Maradona told Real Madrid to sign Mbappe|
|Samuels out of NZ tour, Narine to miss T20s|
|Sydney FC 3 Melbourne City 1: Champions come from behind to go eight points clear|
|Red-hot Salah wins Player of the Month|
|Heynckes unaware of reported Sanches loan termination|
|Maradona: I´d have won more Ballons d´Or than Ronaldo and Messi|
|Khawaja pleased to restore parity in Perth|
|Bairstow enjoys playful celebration of crucial century|
|The Ashes Round-up: Smith leading by example again|
|Wenger confirms Wilshere contract talks imminent|
|Sensational Smith leads Australia fightback|
|We´ve never been approached by Man United – Wenger rejects Ozil reports|
|Joshua ´absolutely´ capable of unification, says Klitschko|
|Mathews fit for India-Sri Lanka series decider|
|Lewandowski demands focus ahead of Christmas|
|Fury not rushing back to take on Joshua|
|Klopp right to rotate at Liverpool – Neville|
|Overton strikes twice for England in Perth|
|LeBron´s 59th triple-double leads Cavaliers past Lakers|
|Jets offensive coordinator admits surrender in blowout loss to Broncos|
|Osweiler helps Broncos past Colts|
|England collapse to be all out for 403 in Perth|
|Donnarumma plays down Milan exit rumours|
|Barkley could leave in January – Allardyce|
|Siemian suffers shoulder injury, Osweiler in for Broncos|
|Pulisic voted youngest-ever male USA player of the year|
|Griezmann will be allowed to leave – Simeone|
|Steelers LB Shazier has begun rehabilitation process|
|Guardiola appears to aim another dig at Mourinho|
|Vardy relishing Fleetwood return|
|Pau stay perfect with win over Agen|
|USB joking? Klitschko stick and robe sold for mega money|
|Almiron blocked from becoming Las Palmas coach|
|Ligue 1 adopts VAR from next season|
|Calabria extends AC Milan contract|
|Everton give new deals to Calvert-Lewin, Holgate & Kenny|