Although both were in the home Leicester end, there were suggestions the incident may have been between a Leicester fan and an Arsenal fan who had managed to get a ticket in the Leicester seats and celebrated the crucial goal.
A third added: "Can see the Leicester fans have caught an Arsenal fan in the home end 0:20 in…".
Arsenal took to X the day after the game to post a new angle of the opener from behind the Leicester goal.
The video showed Ethan Nwaneri's cross, Merino's header and the wild celebrations in front of the travelling fans in the corner of the stadium.
Merino came off the bench at the King Power to answer Mikel Arteta's striker SOS call following injuries to Gabriel Jesus and Kai Havertz.
