Sweden’s foreign ministry states that talks held near the Swedish capital Stockholm on Monday that included representatives from North and South Korea and the United States were constructive.

“Constructive talks have been held covering issues concerning developments on the Korean peninsula, including confidence building, economic development and long-term engagement,” a ministry spokesman said.

North Korean vice foreign minister Choe Son Hui, U.S. Special Representative for North Korea Stephen Biegun and South Korean negotiator Lee Do-hoon took part in the talks.