Police have launched an investigation after fireworks were heard outside Celtic Park during a two-minute silence.
The SPFL confirmed on Friday that a minute's silence would be held ahead of this weekend's fixtures in honour of Prince Philip.
The Duke of Edinburgh died early on Friday morning at the age of 99.
READ MORE: Prince Philip funeral: Details emerge for final farewell to Duke of Edinburgh
While both teams were observing the silence, bangs were heard from outside the ground.
It came ahead of Celtic's 6-0 victory over Livingston.
Officers confirmed an investigation is underway after the incident.
A Police Scotland spokesperson said: "We are investigating the misuse of fireworks outside Celtic Park stadium on Saturday, 10 April, 2021. Enquiries into the incident are ongoing."
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