Kim Jong Un, top leader of the Democratic People's Republic of Korea (DPRK), expressed gratitude to "model" political lecturers in the country for promoting the policy of the ruling Workers' Party of Korea (WPK), the DPRK's official newspaper Rodong Sinmun reported on Monday.

"Comrade Kim Jong Un sent gratitude to exemplary instructors for carrying out their responsibility and role as basic propagandists, which have led workers to implement the party's policies," the newspaper of the ruling Workers' Party said.

The instructors are full of passion to live up to the leader's expectations by continuing to ideologically encourage workers to continue their frontal breakthrough and move forward, it added.

According to the official Korean Central News Agency (KCNA) on Saturday, Kim attended a fertilizer factory completion ceremony on May Day and cut the ribbon at the event, his first public appearance after 20 days of absence.

(With input from Xinhua)