Security forces intervened in the village of Diraz, west of the capital, where protesters have been staging sit-ins since authorities revoked Sheikh Isa Qassim's citizenship in June.

A 21-year-old man was hospitalized with a bullet wound to his head after the raid, human rights campaigners said quoting a medical source.

Dozens of residents in Diraz later staged a protest chanting slogans against the regime, witnesses said, AFP reported.

The trial of the 75-year-old cleric on charges of illegal fundraising and money laundering opened in July. A new hearing is scheduled for Monday.

Bahrain has been rocked by unrest since security forces crushed peaceful protests demanding a constitutional monarchy and an elected prime minister in 2011.

The head of the Shiite opposition, Sheikh Ali Salman, was arrested in December 2014 and sentenced to nine years in prison.