"The team is in a shock," Haas said. "Dominique Taboga was definitely one of our leading players. This is not an easy situation for us."
Prosecutors said Kuljic has denied the alleged attempt at match-fixing, adding that Taboga owed him money from the time they both played at Kapfenberg in the first half of 2012. Prosecutors were investigating the cause and extent of Taboga's debt.
A retired striker who played 20 matches for Austria from 2005-07, Kuljic was arrested in a parking lot in Anif near Salzburg while waiting for Taboga, expecting the Groedig defender to hand over 3,000 euros ($4,020). Taboga had warned the police the evening before.
The Austrian league said it "completely condemns this attempt of fixing matches."
"We have to fight this with all our strengths," Bundesliga President Hans Rinner said. "If clubs manage to prevent their players from getting involved in this criminal kind of foul play, that's a first and important step forward."