Armed police will be on duty for Celtic's Champions League game against PSG at Celtic Park on Tuesday evening.
Extra security measures will be in place as 58,000 people are set to attend the European tie and security expert Andrew McQuillan told BBC Scotland that the move appeared to be in response to recent terror attacks. He said the public should feel 'reassured'.
"They're trying to normalise it as quickly as possible because obviously that's a key thing," he said. "You want to try and normalise it but also have the visible threat there to try and deter things.
"The reality is, with these types of attacks, which we've seen with Manchester as well, they're going for the softest target.
"If you have two events, one has armed police, one does not, the armed police one is less likely to be chosen as a target.
"So any event where there is armed police, the public should feel more reassured."
Fans have been advised to arrive at the stadium well in advance of the 7.45pm kick-off with road closures set to be in place.
"We are well versed in policing these types of events. The overall policing plan will include additional security measures in and around the stadium, such as road closures, "said match commander Supt Mark Hargreaves.
"Please be patient as it might take a little more time than usual to get through the turnstiles.
"Therefore I would ask anyone who is attending to ensure they get there early - plan your travel in advance. As it is such a crucial fixture for both teams, no supporters from either side would want to miss the kick off.
"I would like to emphasise that the security measures, which includes the presence of armed officers, are not in response to any particular threat as there is no intelligence to suggest that - similar measures have been introduced across a number of stadiums and are being used at Ibrox and Hampden."