"The Hills will be closed on Saturday and Sunday to condemn the unwanted arrests of GJM leaders," Gurung said in a cryptic Facebook post.
Benoy Tamang, assistant secretary of GJM and an executive member in-charge of Information and Culture Department of the hill council, Gorkhaland Territorial Administration (GTA), was arrested from Rambi near the Sikkim-West Bengal border in Kalimpong subdivision, police sources said.
The four were produced in a court in Kalimpong and remanded to 14 days judicial custody.
With the arrest of Tamang and Pokhrel, 13 GTA members have been arrested since the indefinite bandh began on August three.
The GJM president said in a separate Facebook post that the two-day 'ghar bahira janata' (people on the streets) agitation from today would continue indefinitely till those arrested were released and the cases against them withdrawn.