Kyrgyzstan's leading opposition party said authorities were trying to destroy it and vowed to fight the detention of its leader, who is accused of treason. "We believe the steps taken by the authorities against our leader and party members are criminal," United Kyrgyzstan wrote on social media late on September 4. It vowed to fight Adakhan Madumarov's detention after the leading rival of President Sadyr Japarov was arrested on September 2. Details of the investigation have not been made public but local media have reported that the case is linked to a border agreement signed in 2009 with Tajikistan.