Police are investigating after an Everton fan appeared to get involved in a touchline scrap - while holding a child in his arms.
The angry Everton supporter was seen holding the young boy with one arm, and using his other to grapple or punch at opposition players during Thursday night's UEFA cup tie.
He was surrounded by other fans pulling and throwing punches and hurling abuse as tempers frayed at Goodison Park.
The incident happened during the second half of the first leg with the home side trailing visitors Lyon.
Toffees skipper Ashley Williams' push on goalkeeper Anthony Lopes ignited a heated confrontation between several Everton and Lyon players which continued off the pitch and in front of the Howard Kendall Gwladys Street End.
While players continued to push each other in front of the fans, the Everton supporter, who was holding a child, appeared to push Lopes' head and seemed to aim a punch in the direction of the keeper and defender Mouctar Diakhaby.
The Lyon players noticed that and shouted in his direction before things eventually cooled down.
Clips of the incident have since been shared thousands of times online.
Merseyside Police said they are investigating the incident at Everton's Goodison Park home.
The force said in a statement:
Everton could also now face punishment from UEFA following the incident.