Manchester City striker Sergio Aguero has broken down while on international duty.

Aguero has been ruled as a doubt for Argentina's World Cup 2014 qualifiers against Bolivia and Colombia after he pulled up in training with a groin problem.

Technical director Alejandro Sabella told the Argentinian Football Association: "Sergio Aguero has a sore groin and is doubtful for the match against Bolivia. In the event that Aguero does not play, Javier Pastore may replace him."