Adhikari joined the BJP amid Shah's two-day visit to West Bengal ahead of the assembly elections in 2021.
BJP state president Dilip Ghosh said efforts will be made to pacify the dissidents.
Violence had rocked West Bengal's rural polls on Saturday, leaving 15 people dead while ballot boxes were vandalised, ballot papers torched, and bombs thrown at rivals in several places.
Six of the eight-member Trinamool Congress delegation left Assam on Friday morning after an overnight detention at Silchar airport, an official said.
Daily life was partially affected in West Bengal on Wednesday due to a 12-hour shutdown called by the Bharatiya Janata Party, protesting the police action against demonstrators during a march to the state secretariat.
Moderate to high turnout was recorded in 13 assembly constituencies across seven states where bypolls were held on Wednesday amid sporadic incidents of violence in Uttarakhand, Bihar and West Bengal.
Mamata Banerjee was on Friday unanimously elected as the leader of the Trinamool Congress legislature party at its meeting in Kolkata.
Adhikari, the face of the Nandigram movement that catapulated Mamata Bannerjee to power in 2011, sent his resignation letter to the chief minister by fax, which he then forwarded to Governor Jagdeep Dhankhar by e-mail.
West Bengal chief minister Mamata Banerjee and Trinamool Congress general secretary Abhishek Banerjee are among the star campaigners of the party for the October 30 bypolls to four Assembly seats in the state, but interestingly, the names of actor-turned-MP Nusrat Jahan and former BJP leader Babul Supriyo, who recently joined the TMC camp do not feature in the list.
The Calcutta high court on Tuesday allowed Leader of Opposition in West Bengal Assembly Suvendu Adhikari to visit the restive Sandeshkhali village, while observing that it is surprising that the main accused Shajahan Sheikh has not been arrested by the state police so far.
'Women are likely to have voted because of the numerous welfare schemes. The CAA consolidated minority votes and the BJP's booth-level organisation in Bengal is weak.'
One person was critically injured after being hit by a bullet fired accidentally from a police revolver.
West Bengal minister Bachchu Hansda and Tehatta MLA Gouri Sankar Dutta joined the Bharatiya Janata Party on Wednesday after being denied nominations for the assembly polls by the Trinamool Congress.
Stating that there will be a 'big khela' in West Bengal, Bharatiya Janata Party MLA Agnimitra Paul on Tuesday claimed that the Trinamool Congress-led state government would not survive after December this year.
The counting of votes for the bypolls to 46 assembly seats in 13 states and in the Lok Sabha segments of Nanded in Maharashtra and Wayanad in Kerala, a crucial electoral exercise since the parliamentary polls in April-May, will begin at 8 am on Saturday.
Over 60 per cent voter turnout was recorded on Monday in 49 constituencies in six states and two Union territories in the fifth phase of Lok Sabha elections, with Baramulla in Jammu and Kashmir recording its highest-ever voting percentage.
In another display of the politics of threat in West Bengal, a ruling Trinamool Congress Member of Legislative Assembly openly threatened to "behead" a Congress leader in Birbhum district.
All the winners in the assembly bypolls were from the respective ruling parties.
Bengal ministers Firhad Hakim and Subrata Mukherjee were taken to the Central Bureau of Investigation office on Monday in connection with the Narada sting operation, officials said.
'A murder has occurred in the room, but there were no signs of struggle.' 'RG Kar says the body was discovered at 9:30 am. But the media was informed at 8:30 am.' 'We realised that crucial evidence was being destroyed.' 'She had several bite marks on her neck, but no swab was collected.' 'My daughter had 28 injuries on her body. But there was no DNA of the assailant under her nails.' 'Are you saying she did not try to defend herself?'
The 'Khela Hobe' slogan will reverberate across India in the coming days, said Trinamool Congress MLA Madan Mitra on Saturday.
Raijor Dal president Akhil Gogoi said on Thursday that his party has not accepted the Trinamool Congress's proposal of a merger as it does not want to compromise on its Assamese identity.
Of the 294 candidates declared with serious criminal cases, 76 were from the TMC, 52 from the BJP, 47 from the CPI-M and 31 from the Congress.
Discontentment seems to be increasing by the day in sections of the Bharatiya Janata Party and the Trinamool Congress in West Bengal with several leaders of both camps expressing displeasure over the selection of candidates for the upcoming Lok Sabha elections.
Leader of Opposition Suvendu Adhikari objected to Roy's elevation, arguing that the MLA, who had crossed over to the ruling Trinamool Congress last month after winning the polls on a BJP ticket, cannot be considered a legislator of the saffron camp.
His rise has been phenomenal after the party came to power in 2011. He runs the local syndicate which is involved in extortion from local businesses and also involved in illegal mining of sand
A fresh political row has erupted in West Bengal over Bharatiya Janata Party national vice-president Dilip Ghosh's alleged unsavoury remarks about West Bengal Chief Minister Mamata Banerjee, with the Trinamool Congress seeking his arrest and unconditional apology.
It is noteworthy that, rebel Trinamool Congress (TMC) leader Suvendu Adhikari formally tendered his resignation to party chief and West Bengal Chief Minister Mamata Banerjee on Wednesday.
Banerjee, who lost the election in Nandigram, has to win this bypoll to retain the chief minister's post.
The Trinamool Congress on Monday lost five more sitting MLAs and the control of the Malda Zilla Parishad to the Bharatiya Janata Party as defections continued to rock West Bengal's ruling party ahead of the assembly polls.
Saturday's voting will mark the end to the marathon polling process that began on April 19 month and has already covered 486 Lok Sabha seats in 28 states and Union territories.
West Bengal Chief Minister Mamata Banerjee on Thursday received wholehearted support from a group of women from the troubled Sandeshkhali area who met her after a Trinamool Congress rally in Kolkata, party sources said.
Voting for the bypolls in Punjab, Himachal Pradesh, Uttarakhand, West Bengal, Madhya Pradesh, Bihar and Tamil Nadu were held on Wednesday.
The BJP, which has emerged as the main opposition party in West Bengal after winning 77 seats in the assembly polls last year, failed to win even a single civic body.
The Trinamool Congress on Monday wrote to Kolkata Police Commissioner Soumen Mitra seeking 'necessary action' under the law against the Central Bureau of Investigaton officials who arrested three senior party leaders 'illegally'.
Among other measures, TMC announced Monday that it had formed coordination committees in all districts comprising senior leaders to look into party members' grievances.
In the 145-year history of Kolkata Municipal Corporation, nationalist leaders like Deshbandhu Chittaranjan Das, Netaji Subhas Chandra Bose and Bidhan Chandra Roy, also a former chief minister, graced the mayor's chair in pre-Independent India.
'The TMC forgets that if people don't stand by you, your party will never win.'
A day after quitting the Congress, former Goa chief minister Luizinho Faleiro on Tuesday arrived in Kolkata, where he is likely to join the Trinamool Congress, party sources said.
According to the sources, he wrote to TMC supremo Mamata Banerjee apprising her of his decision to resign from the party's primary membership.