Updated

The U.S. Anti-Doping Agency has suspended a boxer who it says failed three times to meet requirements for his whereabouts so he could be found for out-of-competition drug testing.

The agency said Sunday that an independent arbitrator found 23-year-old Lenroy Thompson, of Lenexa, Kan., violated whereabouts requirements three times in 18 months.

He has been suspended from the sport for one year.

All of his competitive results will be disqualified dating to Nov. 9, the date of his third whereabouts failure.