Brendan Rodgers intervened as a Celtic fan confronted the club's board during a 2-0 defeat to Hearts. The supporter approached the directors' area in the main stand, shouting at chief executive Michael Nicholson and other officials.
Security stewards quickly moved in to restrain the fan and escort him away. The incident came amid chants of 'sack the board' from the stands, reflecting growing frustration among supporters.
Celtic have lost two consecutive league matches, allowing Rangers to close the gap at the top of the Scottish Premiership. Rangers have two games in hand and could leapfrog the champions.
The club is also dealing with a long-running dispute with the Green Brigade ultras group, who remain banned from matches. Issues include safety concerns and the group's support for Palestine.
Rodgers now faces the challenge of rallying his players and addressing fan unrest as Celtic prepare for a crucial run-in against their Old Firm rivals.
