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.
|Cisse and Senegal give cause for African celebration|
|Carvajal ready to face Iran - Hierro|
|Japan´s World Cup victory over Colombia sparks celebrations on the streets of Tokyo|
|Poland 1 Senegal 2: Good fortune and bad errors hand Africans Group H win|
|England shatter ODI world record with total of 481 against Australia|
|Best yet to come from England hero Kane, says Rashford|
|Salah starts for Egypt against Russia|
|De Jong expects to stay at Ajax|
|Barcelona angered by Pique´s involvement in Griezmann saga|
|Federer begins Halle defence with comfortable Bedene win|
|Tabarez not worried by slow Suarez start|
|Brazil´s Neymar felt pain in his ankle, CBF confirms|
|Griezmann understands Atletico fans´ nerves over Barcelona speculation|
|Queiroz salutes Hierro for uniting Spain|
|Stump from Scotland´s defeat of England auctioned for charity|
|Red Bull will not have works team label, confirm Honda|
|Neymar hobbles out of Brazil World Cup training|
|Ronaldo´s revelry, Messi´s miss and Sanchez´s shocker - Russia 2018, World Cup of the penalty|
|Brazil ask FIFA to explain VAR decisions against Switzerland|
|Colombia 1 Japan 2: Sanchez red spoils Pekerman´s plans|
|Argentina v Croatia: Mercado wants an end to ´Messidependencia´|
|Hoffenheim director suggests €50m bid could land Kramaric|
|England will emerge as a ´champion team´, insists Jones|
|Ryder Cup teams shaping up great, says Strange|
|We cannot replace Iniesta – Abidal|
|Colombia´s Sanchez sees second-quickest World Cup red card|
|France v Peru: Varane and Les Bleus calm after unconvincing start|
|Semenya challenges IAAF hyperandrogenism rule with CAS|
|No Germany line-up changes needed, says Neuer|
|James absent from Colombia line-up|
|Alli to have scan on thigh knock after England win|
|Mooy not using World Cup to facilitate transfer from Huddersfield|
|Billy Vunipola a big loss for England, says Vermeulen|
|´Incredible´ Firmino works like a defender, says Mane|
|Jackson and Olding could make Ireland returns|
|Stokes and Woakes ruled out of T20I matches|
|Denmark v Australia: Socceroos confident of reaching last 16|
|Argentina should have selected Icardi for the World Cup, Zanetti claims|
|Except for Messi, Croatia are better than Argentina - Kovacic|
|I chose Real Madrid over PSG and Barcelona – Vinicius Junior|
|Germany should drop Ozil - Effenberg|
|Anything is possible with Tiger - Strange backs Woods revival despite U.S. Open misery|
|Fekir won´t offer Liverpool update, despite meeting Aulas|
|Southgate aims to repeat ´perfect´ preparation for Panama|
|Coleman ready for crucial Sydney clash|
|Prior to make Origin debut in Sydney|
|Secretive space capital Samara opens its doors as World Cup rolls into town|
|Red Bull confirm Honda switch|
|Arzani has a big future, says ´surprised´ Jakobsen|
|Goalkeepers are the victims of FIFA - Talking balls at Russia 2018|
|Mexico boss backs Lozano for Premier League move|
|Yankees, Nationals split unconventional doubleheader|
|Southgate praises Maguire´s performance|
|The only thing Kane hasn´t done is score in August - Southgate|
|Fenerbahce part ways with Kocaman|
|Celtics forward Hayward expected to be fully cleared by August|
|Nationals acquire closer Herrera from Royals|
|Angels star Ohtani to be re-evaluated in 2-3 weeks|
|Crisis club Sporting appoint Mihajlovic|
|Fekir could still join Liverpool this summer - agent|
|Brathwaithe and weather thwart Sri Lanka|
|Southgate bemused by England-Tunisia penalty decisions|
|Kane disappointed by refereeing decisions despite England win|
|Koepka backed by coach to win more majors|
|Rybarikova ousts Pliskova in Birmingham, seeds fail in Mallorca|
|Kane: England players had flies in our mouths|
|Lemar signs Atletico deal|
|Griezmann renews Atletico Madrid contract after rejecting Barcelona|
|Captain Kane comes good to heighten England´s aura of optimism|
|Wawrinka and Cilic cruise through at Queen´s|