Trinamool's Sikkim unit president PT Lucksom, also a former deputy chief minister, and state general secretary Tshering Wangchuk Lepcha sent their resignations to party Rajya Sabha MP Derek O Brien and Lok Sabha MP Sudip Bandyopadhyay, sources said.
"In democracy like India resorting to violence would never help in finding a solution".
Meanwhile, Rajnath Singh reviewed the security situation in West Bengal's Darjeeling by sending more troops to help restore normalcy as the state government has not yet submitted its report on the situation.
The former GJM MLA, who formed his own political outfit previous year, said that they would urge the BJP to support the demand of separate Gorkhaland through a political resolution and put pressure on S.S. Ahluwalia, the BJP MP from Darjeeling, to either table the "Gorkhaland bill" in Parliament or resign.
GJM workers, who launched their agitation on June eight, had yesterday hurled petrol bombs, stones and bottles at the police at several places which led the security forces to lob teargas shells and resort to baton-charge to disperse the mobs, according to a police official.
Four protesters have been killed, three of them allegedly in police firing, since unrest begun on June 8 over an alleged attempt to impose Bengali in schools of the hills. The party has claimed that three of its activist were killed yesterday.
Carrying black flags, protesters, especially the youth, marched on the streets of Chowkbazar area of Darjeeling, shouting slogans against the state government and the chief minister.
In West Bengal, the situation in the violence-scarred, strike-bound Darjeeling Hills continues to be tense. "But we are on high alert and are prepared for any eventuality", said a senior police officer.
"Since the violence is not coming to an end in Darjeeling, the Gorkhas are having an alliance with the BJP". We had expected something positive on the part of the central government.
We, the Muslims of Darjeeling, also demand a separate state.
Rajnath Singh said he spoke to West Bengal CM Mamata Banerjee on Sunday morning and took stock of the situation prevailing in Darjeeling+.