A fan who ran onto the pitch during Wednesday night's Champions League match at Parkhead has been arrested.
Nelson Dida was stretchered off at the end of the match
The 27-year-old is being held in connection with an alleged breach of the peace. He is expected to appear at Glasgow Sheriff Court on Friday.
He rushed from the stand following a last-minute winner by Celtic against Italians AC Milan and appeared to strike goalkeeper Nelson Dida.
Celtic have banned the fan for life from attending all club matches.
A spokesman for Celtic said the supporter, who was not a season ticket holder, had been interviewed.
Peter Lawwell, Celtic's chief executive, said: "Clearly, Celtic take this issue extremely seriously and it is satisfying that this individual has been identified so swiftly.
"The individual in question has now been banned for life from attending Celtic matches, both home and away."
A police spokeswoman said the man handed himself into London Road police office at lunchtime and was being interviewed about the incident.
Uefa has been investigating the incident.
Police had appealed for the public's help in identifying the supporter.
Supt Gillian McLeod said: "Both Strathclyde Police and Celtic Football Club will certainly not tolerate this type of behaviour from any spectator."
The Brazilian goalkeeper Dida briefly chased after the fan but then collapsed to the ground.
He was taken off on a stretcher with an ice pack held to his face.
Celtic won the match, against the reigning European champions, 2-1.