POLICE have said they are disappointed with Celtic player Mikael Lustig after he put on an officer's hat during a goal celebration at Sunday's Old Firm.

The Hoops defender, 31, celebrated his side taking a 3-0 lead in the Old Firm derby by charging over to fans wearing the policeman's hat.

READ MORE: Celtic shake up social media pages minutes after ripping Rangers apart

Police Scotland, however, said they were disappointed with the player's actions during the 5-0 Celtic win at Parkhead.

A spokeswoman said: "We are disappointed with the player's actions. We have spoken to the club who will deal with the matter internally.

READ MORE: Watch Celtic fans CHEER ON Alfredo Morelos in Rangers’ last ditch attempt at salvation

"There will be no further police action."

Meanwhile, a total of five people have been arrested in and around the stadium so far.

READ MORE: Old Firm supporters flock to Parkhead - can you spot yourself in our gallery?

One was arrested for being drunken and incapable, and another had a bottle of alcohol in the stadium. 

Police Scotland also made an arrest for possession of a pyrotechnic which are banned from the stadium.

Two arrests were made for sectarian breach of the peace incidents.

READ MORE: Watch Celtic fans ruthlessly troll Andy Halliday upon arrival at Parkhead

It is not known whether any of the five have been charged.