After ugly scenes at Sunday's Old Firm derby, what do we know about the fan clashes and what could happen next?

Rangers and Celtic have both issued statements regarding the pitch invasion after Sunday's Scottish Cup quarter final tie.

Rangers "unequivocally" condemn Sunday's Old Firm fan disorder, while Celtic say "examples of unacceptable behaviour" must be ...

Rangers boss Danny Röhl has condemned pitch invasion after Celtic beat his side on penalties in Scottish Cup quarter-finals; ...

The historic Old Firm rivalry erupted into chaos following a dramatic Scottish Cup quarterfinal clash at Ibrox.

Arrests were made with both police officers and fans injured during clashes following Celtic's 4-2 win on penalties.

Celtic took 7,500 fans to Ibrox on Sunday but after crowd trouble following their Scottish Cup quarter-final win, Police ...

Fans clashed on the pitch after Celtic knocked arch rivals Rangers out of the Scottish Cup at Ibrox on Sunday. Fighting broke out when dozens of Celtic supporters invaded the pitch to celebrate their ...

Scottish Football Association condemn behaviour from supporters after carnage follows Scottish Cup quarter-final at Ibrox ...

Celtic and Rangers fans swarmed onto the pitch and hurled flares in ​ugly clashes at Ibrox stadium on Sunday after the ...

Martin O’Neill has confirmed that all of his Celtic players emerged unscathed after ugly post-match scenes marred the side’s ...

Football fan body boss angered by Old Firm ‘debacle’ - Police described the scenes as ‘shameful’ as Rangers and Celtic fans ...