Celtic took the first step towards the Champions League with a comfortable 2-0 win over part-time Linfield at Windsor Park.
However the Belfast game sparked controversy when striker Leigh Griffiths received a booking after being repeatedly struck with objects from the stands.
Among the missiles thrown at him was a bottle of Buckfast.
Leigh Griffiths gets a yellow card for having a bottle of Buckfast thrown at him pic.twitter.com/3QicrAYx3q
Leigh Griffiths of Celtic holds up one of the bottles thrown at him by Linfield fans towards the referee Konrad Plautz.
However, there were around 300 Hoops fans in the Kop stand, set aside for them in a half-full stadium, to see attacker Scott Sinclair head Brendan Rodgers’ side ahead in the 17th minute before midfielder Tom Rogic made it 2-0 five minutes later.
VIDEO: Leigh Griffiths booked after bottle of Buckfast thrown at him in Celtic-Linfield clash