Five fans injured by fireworks during Feyenoord v Cambuur Eredivisie match

Feyenoord supporters set off fireworks during Sunday’s Eredivisie fixture at the Kooi Stadion in Leeuwarden, leaving five people injured and forcing a stoppage; one explosive detonated just metres from Feyenoord goalkeeper Tjark Ernst. Play was halted in the first half and resumed after around 10 minutes.

SC Cambuur said supporters suffered "burns, hearing damage and eye injuries" after visiting fans in the away end lit a large number of red flares and threw fireworks, some aimed towards sections containing home fans, and confirmed that five supporters were injured. Play was suspended in the 12th minute and the game continued, though it would have been abandoned had a player or match official been hit.

Feyenoord said it "firmly distances itself from the unacceptable events" and that head coach Giovanni van Bronckhorst, who was an assistant to Arne Slot at Liverpool last season, apologised on behalf of the club to SC Cambuur after the match. The club also said it would request camera footage.

Feyenoord general manager Robert Eenhoorn said he "cannot be happy" with their 5-2 victory in Leeuwarden, adding "frustration prevails too much for that". He warned the problem "obviously does not only affect Feyenoord and is unfortunately something we have been unable to put a stop to for decades," and said: "We will therefore have to sit down again with all stakeholders, clubs, the KNVB [Dutch football association], and the authorities to look for a solution together."

Leeuwarden mayor Foort van Oosten condemned the incident and promised an investigation, while the KNVB said it would revisit its protocols for incidents of disorder. Jan Bluyssen, the KNVB's manager of professional football competition affairs, told Dutch news agency ANP: "That doesn't feel right," and added: "We need to examine whether the protocol is still appropriate and how we might want to adjust it."

Last season, an Eredivisie match between Ajax and Groningen was abandoned after fireworks and flares were ignited behind one of the goals at Johan Cruyff Arena.

SC Cambuur said it would work with the authorities to make sure those responsible were punished, and the KNVB has announced it will review its incident protocols following the events at the Kooi Stadion.