Messi, Ronaldo lead sports stars in condemning Barcelona attack

• Lionel Messi and Cristiano Ronaldo joined Spanish sports stars around the world in expressing their grief after Thursday's terror attack in Barcelona
• Real Madrid's Portuguese captain Ronaldo took to social media to express his shock at the attack which also left more than 50 injured

Football icons and longtime rivals Lionel Messi and Cristiano Ronaldo joined Spanish sports stars around the world in expressing their grief after Thursday's terror attack in Barcelona left 13 people dead.

[PHOTO: COURTESY]

Barcelona's most famous street Las Ramblas was packed with tourists when a van drove into the crowds, leaving scenes of carnage.