Los Angeles, Oct 6 (Inditop) Pop star Janet Jackson has cancelled three more shows on her North American tour.According to Tmz.com, Jackson has cancelled the shows in Greensboro, Indiana; Atlanta and Fort Lauderdale in the US due to ill health.

On this present tour in North America, she had already cancelled shows in Montreal, Boston and Philadelphia.

In Montreal, she had to be taken to the hospital just minutes before the show was to start. The doctors suggested she should go home for further treatment.