BERNE - Basel goalkeeper Franco Costanzo has been fined by his Swiss club for attacking a team mate on the pitch and grabbing him by the hair. Costanzo, the team captain, lost his temper at the end of Basel's 1-1 draw at home to arch-rivals and titleholders FC Zurich in a league match on Sunday. Television pictures showed the Argentine remonstrating furiously with team mate Beg Ferati as the final whistle went. Ferati pushed Costanzo away but this enraged the goalkeeper even more. He then put his hand on Ferati's head and grabbed him by the hair before team mates and at least one opponent came in to separate the pair. "He lost his composure in an unacceptable way and overstepped the legitimate emotional boundaries," said the club in a statement. "The club will not accept one of its own players giving a bad example on or near the field of play." The club added that Costanzo, who will be fined an undisclosed sum, will keep the captaincy. "I'm sorry, I apologise," the former River Plate and Alaves goalkeeper said in a television interview after the game. "Everyone knows me and it's the first time in my career I've done a stupid thing like this. It's a situation we have to sort out in the dressing room." The club also announced that new signing Alex Frei, leading record scorer for the Swiss national side, would be fined after his injury-time sending off. Frei, who set up Basel's last-minute equaliser with a clever backheel, was given a yellow card followed by another almost immediately afterwards for throwing the ball at an opponent in anger.