Complaints have been made to Police Scotland over the conduct of Hibernian Head Coach Neil Lennon during his side's victory over Rangers on Saturday.
The Edinburgh side triumphed 3-2 at Ibrox Park but the win was overshadowed by actions some Rangers fans felt were 'inflammatory' after one of his side's goals.
Lennon turned to face the crowd and cupped his ears as his celebrated Simon Murray's 21st minute equaliser.
Now a Police Scotland spokesperson has said: "We have received complaints and inquiries are continuing."
Comments made to Lennon on social media are also being investigated.
"Police Scotland is aware of offensive and threatening comments that have been posted on social media concerning a named individual and inquiries are currently ongoing in connection with this," a spokeswoman told BBC Scotland.
Lennon, however, insisted he had no concerns about his behaviour When it was suggested that Rangers assistant manager Helder Baptista had spoken to the police about Lennon, he replied: "He should have got back in his box.
"I don't know what he was saying, I assume he was unhappy about something. I didn't make a gesture, I celebrated a goal. If they are unhappy about it they can tell me. But I shouldn't get into trouble for doing that.
"I am celebrating a goal. What way are you supposed to celebrate a goal? If I pick my nose someone will find something to criticise me for, I am celebrating a goal. You are looking for things that aren't there."
Lennon was pleased by the way his side responded to going down to an early goal. He said: "I am thrilled by the win and the character and quality of the team. I didn't see the sending off but John must have seen something.
Rangers boss Pedro Caixinha seemed to suggest that Lennon and his assistant Garry Parker were treated differently by fourth official Euan Anderson at the side of the pitch.
He said: "I am not talking about influence, I am talking about having the same treatment.
"If the opponents are allowed to have two coaches in the technical area, we are also allowed to have it. If I listen to what I listened to today, with the other manager getting to the fourth official the way he did, that allows me to go the same way but I don't have the same principles."