The former Beatles star's concert in San Francisco, California on Friday night (13Mar15) will now be rescheduled for 1 October (15).

Starr also cancelled a show at the Chumash Casino in Santa Ynez, California on Thursday (12Mar15).

Announcing the sad news, his publicist released a statement which read: "Ringo Starr and His All Starr band are currently on tour, and tonight were to appear at the Chumash Casino in Santa Ynez. Unfortunately, due to illness, Ringo regrets he has to cancel this show. While he hopes to be able to reschedule the date sometime in the future, no date has been set and ticket holders will be refunded."

Starr's concert in Pala, California on Saturday (14Mar15) and a Sunday (15Mar15) show at the The Pearl at Palms Casino Resort in Las Vegas are still scheduled to go ahead.

Starr is currently on tour with his brother-in-law Joe Walsh, Benmont Tench, Dave Stewart, Richard Marx and Peter Frampton, among others. The rocker will be inducted into the Rock and Roll Hall of Fame in Cleveland, Ohio on 18 April (15).

Details about the illness that led to the gig cancellations have not been released.