Rocker Bono has been told to take a break following reported heart palpitations and chest pains.
The U2 star checked in for tests at the Princess Grace Memorial Hospital in Monaco on Wednesday during a vacation in France, according to RollingStone.com.
He was examined by a top heart specialist and told to get some rest. He was not kept in overnight.
The health scare comes three weeks after U2 wrapped up their 360 Tour.
The band postponed summer dates last year when Bono had to undergo emergency back surgery.