Celtic began their Europa League campaign with a 2-2 draw against Salzburg at the Red Bull Arena on Thursday evening.
Ronny Deila's side went ahead in 14 minutes thanks to a debut goal from on-loan Rubin Kazan winger Mubarak Wakaso but Brazilian Alan equalised before half-time.
Skipper Scott Brown restored Celtic's lead when his shot took a deflection before beating the keeper but Jonathan Soriano earned the Austrians a point direct from a free-kick in 78 minutes.
In tonight's other Group D fixture, Dinamo Zagreb, who Celtic face in their next game at Parkhead in a fortnight, ran out 5-1 winners at home to Romanian side FC Astra.