LL Cool J has been diagnosed with an abdominal ailment and is canceling the remaining 12 dates on his tour.
The rapper's specific illness was not disclosed but, according to a statement released to The Associated Press, he is currently under a doctor's care and has been advised to rest and take medication.
Shows have been canceled in cities including Atlanta and Miami.
"I am extremely disappointed to have to cancel the rest of this fun and successful tour," LL said. "I apologize for disappointing my fans who have already bought tickets."
Ticket holders can seek refunds at the point of purchase.