Tehran, Iran (CNN) -- Iran's Parliament Speaker Ali Larijani will visit North Korea on Sunday on a three-day trip, Iran's parliament news service said.
From Pyongyang, Larijani will travel to China, the news service said.
The trips are intended to "further promote parliamentary cooperation and relations," according to Hossein Sheikholeslam, the international affairs advisor to Larijani.
"He will also discuss the latest developments in the region with Chinese and DPRK officials," Sheikholeslam told the news agency.
In May, a report compiled by a U.N. panel of experts looking into Security Council violations by North Korea found the country continues to trade banned weapons technology with several nations, including Iran.
CNN's Mitra Mobasherat contributed to this report.