Bahrain says it has suspended all activities by the tiny island kingdom's largest Shiite political group amid a widening crackdown on dissent, five years after the country's Arab Spring protests.

In a statement Tuesday on the state-run Bahrain News Agency, the Justice Ministry says it has suspended the Al-Wefaq opposition group and frozen its assets.

Officials with the party could not be immediately reached.

This comes a day after authorities detained Nabeel Rajab, a prominent activist and the president of the Bahrain Center for Human Rights. Zainab al-Khawaja, another prominent activist, also fled for Denmark in recent days over fears of being imprisoned again.

Bahrain, home to the U.S. Navy's 5th Fleet, crushed the 2011 protests with the help of troops from Saudi Arabia and the United Arab Emirates.