Police are investigating "threatening comments" made against Hibernian coach Neil Lennon, having earlier received complaints about his conduct during his team's latest match against Rangers.
Posts on social media appear to show a user claiming he will shoot the Hibs boss, adding he is "serious" about the threat.
Police had received complaints about Lennon's behaviour during his side's victory at Ibrox on Saturday, but the former Celtic manager denied any wrongdoing.
A Police Scotland spokeswoman said the force are "aware of offensive and threatening comments that have been posted on social media concerning a named individual and inquiries are ongoing in connection with this.
"We can confirm that Police Scotland has received complaints regarding the conduct of Neil Lennon during the match and that inquiries are ongoing into these complaints and any other issues brought to our attention from Saturday's game."
The former Celtic and Northern Ireland captain was criticised by some Rangers fans for "inflammatory" actions after he appeared to cup his ears and make a gesture as he celebrated an early goal during his side's 3-2 away win over the Glasgow club in the Ladbrokes Premiership.
Speaking after the match, Lennon insisted he had no concerns about his goal celebrations after Hibs levelled the match in the 20th minute.
When it was suggested Rangers assistant manager Helder Baptista had spoken to police about Lennon, he said: "I didn't make a gesture, I celebrated a goal.
"If they are unhappy about it they can come and 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?"