Justin Bieber has canceled a concert scheduled Tuesday in Portugal because of unspecified "unforeseen circumstances."
It said the concert was called off "due to unforeseen circumstances." No other details were immediately offered.
Bieber's Monday night show in Portugal was expected to go on as planned.
The 19-year-old singer was criticized last week for starting a show in London 2 hours late. The following night, he collapsed backstage at a concert, complaining of breathing problems.