Derek McInnes says violence in Scottish football needs to be dealt with before someone suffers a serious injury at a football ground.
During this season there has been a noticeable increase in disorder at stadiums.
Last weekend’s Scottish Cup quarter-finals were blighted by poor behaviour from fans within the grounds.
A glass bottle was thrown at Celtic’s Scott Sinclair during the Hoops tie against Hibs at Easter Road last Saturday.
Coins also appeared to be thrown from the home support and the visiting fans let off a flare and threw it on to the pitch after Celtic’s first goal.
On Sunday at Pittodrie a seat was thrown from the away support into the home section of the South Stand after Aberdeen’s match with Rangers.
Then on Monday night Partick Thistle manager Gary Caldwell was targeted with coins from Hearts supporters during their quarter-final at Firhill.
Last weekend’s incidents follow a number of others earlier in the campaign.
Then-Hibs manager Neil Lennon was hit by a coin during the goalless Edinburgh derby at Tynecastle in November.
Kilmarnock striker Kris Boyd was struck by a coin from the Celtic fans at Rugby Park last month during the Hoops 1-0 win.
And in September assistant referee Calum Spence was hit by a coin from the Rangers support during a game against Livingston at the Tony Macaroni Arena.
There have also been complaints about sectarian singing this season and Aberdeen boss McInnes is concerned. With objects being thrown from the stand he is worried someone may get seriously hurt.
The Pittodrie gaffer said: “It may take a serious injury for severe action to happen.
“There have been a lot of warnings recently – whether it’s officials, managers or players, there have been warnings.
“Every time there is an incident reported and highlighted it embarrasses our game. It’s something we need to eradicate and cut out before there is a serious incident.”
What can be done to eradicate this from Scottish football?
Strict liability has been suggested as an option, where clubs are punished for misbehaviour by their fans, with stiffer fines and even points deductions depending on the incident.
However, no action has been taken yet and McInnes believes clubs have a responsibility to deal with incidents.
He added: “I think clubs need to be far more forceful. They need to be more responsible, but there is only so much clubs can do. They have to be responsible for a lot of what their support are up to and identifying any issues as early as you possibly can.
“We all want the same in Scottish football.
“We all want to be talking about on the field, positive play. We’ve got good players, we’ve got good managers and the crowds are up.
“There is a lot going for us in the Scottish game and we should be concentrating more on that than the off-the-field stuff.”
McInnes believes off-the-field incidents show Scottish football in a bad light and thinks fans feel they are entitled to behave however they like within stadiums.
He said: “It is concerning what has happened – but I don’t think it’s exclusive to Scottish football, some of the stuff that’s going on.
“Certainly it has become more of an issue again in our league and it shows us in a bad light.
“It’s something that we have to do all we can to stop happening.
“I think there is an element from every support – within each there is an element within it, and it might be very few, but there is an element within each club where some supporters believe they can behave, act, do and say whatever they want because they pay their entrance fee.
“They need to know they can’t and the punishments need to be severe. Whether it is throwing coins, banners, chants – whatever it is, it is doing us more harm than good.”