U2 frontman Bono recently suffered a health scare after experiencing heart palpitations in the south of France.

The singer spent a number of hours at the Princess Grace Memorial Hospital in Monaco last Wednesday (August 17) after complaining of chest pains.

The singer wasn't kept overnight but the Irish Independent newspaper reported that a leading heart specialist examined Bono and told him to get plenty of rest.

He was later spotted on Friday night (August 19) in Monaco's Saas Cafe with his wife, Ali Hewson, Julian Lennon and Irish designer John Rocha.

This is the second health scare Bono has suffered over the last year.

In 2010, he was forced to pull U2's headline performance at Glastonbury because he had to undergo emergency back surgery.

The band recently wrapped up their 360° world tour in Canada. The tour grossed a record-breaking $736,137,344 (£448 million).

Watch a video of the last concert from their 360° world tour, below: