South Korean pop singer Rain has postponed most of his remaining U.S. arena summer concerts due to production scheduling conflicts, a spokesperson tells

An official statement from Rain's (real name: Jung Ji-hoon) management is forthcoming, but concerts at Honolulu's Aloha Stadium (June 15), Atlanta's Philips Arena (June 19), New York's Madison Square Garden (June 23) and San Francisco's Cow Palace (June 27) have been postponed. The dates will most likely be rescheduled for September or October, according to the spokesperson.

"This is his first time touring the U.S.," the spokesperson notes. "Trying to fit in so many concert venues and so many elaborate productions at large venues has been a bit of a challenge."

At press time, Ji-hoon, who recently completed a tour of Asia, was still scheduled to perform at the Staples Center in Los Angeles June 30.

Revolution Entertainment is promoting dates in Honolulu, Atlanta, New York and San Francisco, while V2B Global is responsible for Los Angeles.