The party also requested President Pranab Mukherjee not to give his consent to the Governor's rule in the state.
"JD(U) strongly condemns the first constitutional sin by the BJP-led central government in the form of its decision to impose President's rule in the border state of Arunachal Pradesh.
"This decision of the NDA-led central government is nothing but an attempt to sabotage the Constitutional mandate, which is not justified in a democracy. This act also shows the BJP's mindset towards co-operative federalism," party general secretary K C Tyagi said in a statement.
"In December last year, the Arunachal Governor, without consulting the Chief Minister and his Council of Ministers, had issued an order to advance the sixth session of the state Assembly to December, 2015 while the session was to commence from January 14 of the New year.
Also Read
"For this, he was in controversy for a long time. This act of the Arunachal Governor is also of destabilizing nature and not good for the federal structure of the state," he said.
"The party also requests the President of India not give his consent to the Governor's rule in the state," Tyagi said.
The Union Cabinet had yesterday recommended imposition of President's Rule in the state rocked by political turmoil.