An officer has died after clashes between Athletic Bilbao and Spartak Moscow fans in the Spanish city, the country's national police service has confirmed.
The National Police Corps issued a statement via Twitter on Thursday, in which they offered their condolences to the family of an officer from the Ertzaintza, the regional force of the Basque country.
The Royal Spanish Football Federation later named the victim as Inocencio Arias Garcia, a 50-year-old man from Ermua.
"A hug and all our affection to the family and colleagues of the Ertzaintza agent who passed away in #AthleticSpartak incidents at San Mames," the police tweet said.
"NO to violence, aggression and barbarity in sport."
Un abrazo y todo nuestro cariño a la familia y compañeros del agente de @ertzaintzaEJGV fallecido en incidentes #AthleticSpartak en San Mamés.— Policía Nacional (@policia) February 22, 2018
NO a la violencia, las agresiones y la barbarie en el deporte.https://t.co/58Sv4Jo9MI pic.twitter.com/CXh3VWNqXU
The RFEF confirmed Garcia died after suffering cardiac arrest following violence between rival fan groups ahead of Thursday's Europa League meeting at San Mames.
He had collapsed shortly after a flare thrown from the group of Russian fans landed nearby, the RFEF said. He was taken to Basurto University hospital, where he was pronounced dead.
"The officer collapsed during the police intervention that took place when fans of both teams faced each other in the promenade of the San Mames stadium, and moments after a flare thrown by a Russian fan landed close to him," the RFEF said.
"The RFEF wants to express its most resounding condemnation of every kind of violent demonstrations by groups of fans who use sporting events to provoke incidents and riots."
Television footage has shown groups of supporters throwing objects at each other and police outside the stadium before kick-off, after earlier scuffles reportedly saw three Russian fans and one police officer taken to hospital with injuries.
At least five people have been arrested for public disorder offences, according to AS.
LaLiga president Javier Tebas said greater restrictions should have been imposed on who was allowed to travel to the northern city for the match.
"This is madness, something very serious," he said, as quoted by AS. "You have to be forceful against ultra [hooligan] violence, you can't give in and everything must be done to eradicate it once and for all.
"The Russian ultras should not have travelled to Bilbao. They should have avoided it. The worst has happened, because a life has been lost, which is something irreparable."
#LaLiga deplores and condemns the death of a police officer following incidents before tonight's match between Athletic Club and Spartak Moscow and extends its deepest condolences to his family and friends. Say no to violence.— LaLiga (@LaLigaEN) February 22, 2018
|Mourinho has made me a better person, says McTominay|
|Gerard sacked as Barca B coach after woeful winless run|
|Sensational Storm demolish Warriors, Dragons win again|
|Bayern links ´an honour´ for Madrid man Bale|
|F1 Raceweek: Vettel closing in on milestone - Azerbaijan GP in numbers|
|It is wide open - Wozniacki hopeful over Roland Garros chances|
|Roma ashamed by Liverpool fan attack|
|Wade, Ginobili will not be rushed over retirement decisions|
|UEFA ´shocked by vile attack´ on Liverpool fan|
|Mayfield´s Big 12 dominance & Jackson the dual threat - The 2018 Quarterback class in Opta numbers|
|Campbell tips Vieira and Bergkamp to replace Wenger|
|Courtois to sue former Belgium coach Wilmots|
|Heavyweights Ronaldo and Lewandowski go head to head – Champions League in Opta numbers|
|Spurs, Heat eliminated as Celtics go up 3-2|
|Angels overcome Ohtani´s so-so outing to win series over Astros|
|Red Bull want Ricciardo decision by August|
|Rangers injuries piling up as Beltre leaves with hamstring issue|
|A´s closer Treinen exits after being hit by comebacker|
|Copa Libertadores Review: Gabriel leads Santos, Atletico cruise|
|He decides the biggest moments – Wijnaldum hails Salah|
|Finau ready to compete after freak ankle injury at Masters|
|Roma have some hope, says Monchi|
|Westbrook fined $10,000 for altercation with Gobert|
|Messi? Ronaldo? Salah is world´s best player – Gerrard|
|Liverpool are not Barcelona – Klopp cautious of Roma comeback|
|Liverpool supporter in ´critical condition´ after fan clashes|
|Gronkowski commits to 2018 season with Patriots|
|F1 Raceweek: Title race to heat up at venue of Vettel-Hamilton flashpoint|
|It´s all-inclusive football with Liverpool! - Klopp pleased despite Roma recovery|
|Montella to remain Sevilla coach until end of season|
|Di Francesco: Roma gave up – but if you don´t believe in a comeback, stay at home|
|Klopp accepts Salah substitution sparked Roma fightback|
|Oxlade-Chamberlain may miss World Cup after suffering ´a really bad injury´|
|De Rossi blames long balls for Roma ´blackout´ at Anfield|
|Trump happy to fly under the radar at World Championship|
|Late Liverpool lapses sour stunning Salah show|
|Henderson wary of Barcelona repeat as Roma leave Liverpool with hope|
|Championship Review: Cardiff slip up as Barnsley stay in the relegation zone|
|Goffin lives dangerously in Barcelona|
|Liverpool 5 Roma 2: Salah shines but late comeback offers Giallorossi hope|
|Salah sets Liverpool record with spectacular first-half double|
|Six first-round quarterbacks & two top-10 trades - 2018 NFL Mock Draft|
|Oxlade-Chamberlain carried off in Champions League semi-final|
|Indians equal lowest total in defeat to Sunrisers|
|Selby final frustration contributed to ´beginning of the end´ comment - Higgins|
|Wozniacki makes winning start as Radwanska retires|
|Firmino back, as Milner starts for Liverpool against Roma|
|I didn´t want James to go - Zidane ready for Champions League reunion with familiar face|
|Kroos: You can´t buy the Champions League|
|Strauss open to Springboks return|
|Shurmur ends Beckham Jr trade speculation|
|Leeds urged to help Rohingya during ´odd´ Myanmar tour|
|Garcia dumps fit-again Sharapova out in Stuttgart|
|Buffon slams reports of breakdown in Benatia relationship|
|Former France coach Michel dies aged 70|
|Ancelotti talks not about Italy job, says Costacurta|
|Hartley: Concussion will not end my career|
|Stanlake´s IPL stint cut short by fractured finger|
|It was a weird few days - FA Cup final ref Oliver reflects on Buffon incident|
|Boateng not intimidated by supreme athlete Ronaldo|
|McNabb magnificent, Smith a Bengals bust - The last time QBs were drafted 1-2-3|
|Wolff loving battle with Ferrari and Red Bull|
|Heynckes: James was depressed after Real Madrid exit|
|Worry about Ronaldo? Real Madrid should fear Lewandowski, says Heynckes|
|Supporter tensions have affected Wenger - Rice|
|Springboks legend Habana to retire|
|Leinster stalwarts Nacewa and Strauss to retire|
|Germany submits Euro 2024 bid dossier|
|Bulls prop Schoeman given six-week ban for biting|
|Amir to arrive in England after visa delay|