New Delhi, Jan 30 (UNI) The Central government  filed a detailed affidavit along with annexures in the Supreme Court in connection with the imposition of President's rule in the state of Arunachal Pradesh. Defending its move to impose Central rule in Arunachal Pradesh, the Centre, in its 316-page affidavit, in a sealed cover, said that there was a breakdown of law and order in the sensitive border state. A Constitution bench, headed by Justice Jagdish Singh Kehar and Justice C Nagappan, on January 27, had expressed its strongest displeasure over the way the Union of India had imposed President's rule in Arunachal Pradesh and had issued a notice to the Central government and asked it to file a detailed reply by today as to what forces it to take this extreme step. "It is a very serious issue. You are taking a decision without informing us," the bench had observed and had fixed February 1 as the next date of hearing in the case. UNI XC RP1755