US presidential contender Senator Bernie Sanders has canceled upcoming campaign events after having emergency heart surgery overnight.
Senator Sanders was in Las Vegas for a gun safety forum when doctors discovered a blocked artery in his heart.
Senator Sanders’ senior advisor Jeff Weaver said the senator is recovering well.
"Senator Sanders is conversing and in good spirits. He will be resting up over the next few days. We are canceling his events and appearances until further notice, and we will continue to provide appropriate updates,” Mr Weaver said.