Bahrain's justice ministry has filed a lawsuit to dissolve the Islamic Action Society "Amal".
The ministry attributed its move to the alleged "grave breaches of the provisions of Bahrain's constitution and laws."
The breaches violate the principles and objectives of legitimate political work, the ministry said on Sunday.
All political societies must be committed to the constitution, respect the rule of law and protect national achievements at all political, economic, social and human rights levels, the statement sai/Amal chairman Mohammad Ali Al Mahfoodh has been detained since May last year for his alleged role in the unrest that hit the country in February 2011.
The society is the direct descendant of the Islamic Front for the Liberation of Bahrain, the militant organisation whose members were pardoned following political reforms launched by King Hamad Bin Eisa Al Khalifa in 2001. The members either returned from exile or were released from prison and formed the Islamic Action Society.
Amal boycotted the parliamentary elections in 2002, the first to be held in Bahrain following a three-decade constitutional hiatus.