By John Reid

Celtic defender Mikael Lustig has apologised for his behaviour before the Italy-Sweden World Cup play-off game last Sunday.

After hearing the Swedish national anthem being booed by the Italy fans, Lustig was caught on camera swearing at the crowd.

However, Lustig has now taken to Instagram and has apologised (in Swedish) for the incident.

In his apology, Lustig admits that ‘I lost my composure. I got angry and screamed out of frustration at the audience.

‘I chose a word that I regret in retrospect. It wasn’t okay, it isn’t okay and I’m sorry.’

Subscribe to Football Insider TV now

Lustig returned from suspension in the first leg to turn in a battling performance as Sweden qualified for the World Cup for the first time since 2006.

The Swede has enjoyed a trophy-laden career at the Hoops since joining Celtic in 2012.

He has won six Scottish Premiership titles, two Scottish Cups and two League Cups.

Last season he was also named in the PFA Scotland team of the year, as Celtic won their first domestic treble since 2001.

Lustig was also part of the Celtic side which set a new British domestic record of 63 games unbeaten, in the 4-0 win over St Johnstone before international break.

Celtic return to league duty against Ross County on Saturday, before the Hoops head to Paris to take on PSG in their penultimate Champions League group stage game.

In other Celtic news, Peter Lawwell has denied claims that Celtic are subsiding Rangers

We’ve launched a << BREAKING NEWS FEED>> exclusively for your club. ‘Like Us’ on Facebook by clicking here if you want 24/7 updates on all Celtic breaking news