Pakistan's Interior Minister Mohsin Naqvi visited Tehran twice this week to meet with Iranian leaders, a report said Friday.

Foreign Ministry spokesperson Tahir Andrabi said the visits underscored Pakistan’s efforts to promote peace between Iran and the U.S., according to The Associated Press.

Andrabi said Pakistan's mediation efforts are expected to be discussed when Prime Minister Shehbaz Sharif travels to China this weekend for a four-day visit.

Pakistan has served as a key mediator in negotiations between the U.S. and Iran.