Inigo Cabacas died after sustaining injuries caused by a rubber bullet after watching his side's last eight draw with the Gelsenkirchen outfit in EuropeRodolfo Ares, the Basque regional interior chief, has conceded that the area's police force may have acted negligently after it was confirmed that a football fan died due to injuries caused by a rubber bullet in the wake of Athletic Bilbao's 2-2 draw with Schalke last week.
The San Mames clash was followed by disturbances in the streets, and Inigo Cabacas, a 28-year-old fan was shot in the head before being rushed to hospital, and passing away four days later.
An autopsy revealed that Cabacas' death was caused by a rubber bullet, and Ares has promised an inquest into whether police acted properly in dealing with the crowd trouble.
"The autopsy shows that a rubber bullet was the cause [of death]. Therefore we have to establish whether protocols were adhered to or not," Ares told a press conference.
"It is unacceptable that something like this should happen in a democracy in 2012. It is essential to establish what happened and assume the consequences," Antonio Basagoiti, the regional Popular Party (PP) leader added.
Athletic Bilbao overcame the German side 6-4 on aggregate and will face Sporting Lisbon in the Europa League semi-final.