BJP MLAs led by Opposition leader Suvendu Adhikari demonstrated in front of the statue of Dr B.R. Ambedkar on the campus of the Assembly on Friday, alleging that the Trinamul Congress had insulted the Constitution and the House by handing over the party flag to Sabyasachi Dutta.

Dutta had switched to the BJP ahead of the Assembly polls and he rejoined Trinamul on Thursday. Trinamul secretary general and state’s parliamentary affairs minister Partha Chatterjee, along with transport minister Firhad Hakim, handed over the party’s flag to Dutta.

The opposition MLAs have alleged that such activities are against constitutional norms.

“The lamentable act of the parliamentary affairs minister conducting party affairs inside the Assembly is an attack on the constitutional norms. We are protesting against this vitiation,” said Adhikari.

Speaking to journalists, Adhikari said the BJP would lodge complaints with Speaker Biman Banerjee and governor Jagdeep Dhankhar.

He also said once the courts open after the Puja vacation, his party would file a PIL over the matter.

CPM MP Bikash Ranjan Bhattacharyya also took a dig at Trinamul.

Trinamul leader and minister Subrata Mukherjee said that there is nothing wrong in what happened on Thursday. “Nothing is written anywhere against it,” Mukherjee said.