Singer Janet Jackson has been told to postpone more North American tour dates by her doctor, days after announcing she was resuming the concerts.

Jackson, who has already cancelled several gigs because of an undisclosed illness, was originally scheduled to resume her tour in New York state.

A message on the Turning Stone resort's website said Monday's show had been cancelled "due to doctors orders".

Promoters said the postponed dates would be rescheduled.

The 42-year-old has postponed several shows, including Thursday night's show at Madison Square Garden in New York City.

Jackson, who is on her first North American tour in seven years, was rushed to hospital in September during a sound check.

-BBC News