Republic of Ireland captain Robbie Keane has been ruled out of Tuesday's crucial 2014 FIFA World Cup qualifier against Austria. Keane suffered a calf injury in Friday's 0-0 draw against Sweden in Stockholm and was forced to withdraw from the squad after a scan on the problem today.

The LA Galaxy forward, who has 123 caps for Ireland and is his country's all-time leading scorer, was present at today's training session, but did not join in with the group.

Ireland manager Giovanni Trapattoni had been hopeful the former Tottenham Hotspur and Liverpool player would be fit to lead his side out against the Austrians in Dublin. But Trapattoni, who has called up Wolverhampton Wanderers forward Kevin Doyle to replace Keane, will be without his main striker for a game in Dublin which is vital to Ireland's hopes of qualifying for Brazil 2014.

"The Football Association of Ireland today confirmed that Robbie Keane has been ruled out of Tuesday's FIFA World Cup qualifier against Austria in Aviva Stadium," a statement read. "A scan this morning confirmed that Robbie is suffering from calf strain after Friday's game against Sweden. Wolves striker Kevin Doyle has been called up in place of Keane.

"The manager has spoken to Kevin, and he will link up with the squad in time for training in Malahide tomorrow morning."

Trapattoni's team are currently fourth in Group C with seven points from four matches. They are behind Austria on goal difference and one point behind second placed Sweden in the race for a play-off place. Group leaders Germany already have 13 points and are favourites to qualify automatically.

Meanwhile, midfielder Glenn Whelan, who missed the Sweden stalemate with an ankle problem, was able to train on Sunday and could be fit.