A man has been arrested following an incident involving Rangers captain James Tavernier during Friday's Ladbrokes Premiership game at Hibernian.
Shortly before half-time of the 1-1 draw in Edinburgh, a man was shown on television going on to the side of the pitch.
As Rangers full-back Tavernier went to collect the ball for a throw-in, the man kicked it away before pushes were exchanged between the pair.
Police and stewards moved in and led the man away.
A Police Scotland spokesman said: "We can confirm a 21-year-old man has been arrested in connection with an incident at Easter Road.
"Inquiries are ongoing."
A seat was also hurled from the stand where Rangers fans were housed as the man was led away.
It comes after a report into stadium safety was published earlier this week.
The independent review of football policing in Scotland found inconsistencies in the way safety certification is managed across the country.
It said the safety of spectators was put at risk and there could have been a "critical safety incident" at any of the grounds if not for the intervention of "committed professionals".
During Hibs's William Hill Scottish Cup quarter-final defeat to Celtic last Saturday, a bottle was thrown on to the pitch as Hoops winger Scott Sinclair prepared to take a corner.
Club chief executive Leeann Dempster later admitted the stadium's CCTV was unable to pinpoint the culprit.
