Canadian teen pop star Justin Bieber collapsed on stage from shortness of breath during his performance at the O2 Arena last night, representatives for the singer said. Bieber's spokeswoman Melissa Victor said:
Justin's heading to the doctor now. He fainted and took a 20-minute reprieve and was given oxygen.
Bieber was performing for the third out of four nights at London's O2 Arena as part of the European leg of his sold-out "Believe" world tour.
Online ticketing site Viagogo said it had seen an increase in the number of people who had put their seats up for sale in the wake of the singer's late appearance.
The firm said it had seen a 48% rise in listings for his tickets this morning, many trading for less than half the box office price.
Viagogo spokesman Ed Parkinson said: "It seems that parents with younger children have been frightened off by the chance of their kids being kept up beyond their bedtimes, or missing the last trains home."