Country music trio Rascal Flatts have been forced to reschedule three shows due to illness.

The group has yet to reveal who is sick and what ails him, but the bandmates postponed three dates over the weekend and have rescheduled them for August (13).

A post on the group's official website reads: "Due to illness, Rascal Flatts are rescheduling their 1/18 Tulsa, Oklahoma & 1/19 Wichita, Kansas concerts. Tulsa is rescheduled for 8/10/13 & Wichita is rescheduled for 8/9/13.

"The Band Perry will be on both rescheduled shows. All original tickets for these two shows will be honored on the new dates. If you are unable to attend the rescheduled concert, refunds are available at the point of purchase. We apologize for the inconvenience. Thanks for all of your support!"