Cape Town - Cardi B's concert in Indianapolis, which was due to take place on Tuesday night, was called off less than an hour before showtime.
Cardi and her management cited a "security threat" as the reason for the cancellation.
The rapper then tweeted about the event: "Dear Indiana people, 'I'm so sorry for today."
She added: "I will like to let you know I was at the venue. I was even rehearsing a new move I been excited to do on my show. Unfortunately, there was a security threat that is currently under investigation right now. My safety and your safety first."
SEE THAT TWEET HERE: