Prosecutors said Friday they have indicted a pop artist for mailing leaflets critical of President Park Geun-hye to a theater actor and asking him to spread them.

The Seoul Central Prosecutors' Office said the 47-year-old, identified only by his surname Lee, is suspected of sending some 1,500 leaflets with the caricature of Park and the phrase of "resignation" to a 37-year-old actor, surnamed Han, in May and asking him to spread them in downtown Seoul.

Lee is already on trial on separate charges of spreading some 14,000 similar leaflets between May 2014 and February 2015 in Seoul and other major cities in South Korea.

In South Korea, anyone wishing to distribute fliers in public places needs to get approval from the government. (Yonhap)