Bahraini regime forces clashed with people protesting in solidarity with prisoners and martyrs in the run-up to the sixth anniversary of a popular uprising in the Arab country.
Bahraini policemen used tear gas and sound bombs to disperse demonstrators on Sitra Island on Friday. Similar clashes were further reported in the Bahraini town of Bilad al-Qadim.
Mass anti-regime rallies also took place in the villages of Karbabad, Abu Saiba, Sanabis, Nuwaidrat, and Musalla.
Elsewhere, in the village Diraz, people held a sit-in outside the home of top Shia cleric Sheikh Isa Qassim.
Meanwhile, Bahrain forces raided houses in the village of Bani Jamrah and arrested three young people.
Separately on Friday, some 20 organizations and legal figures sent a letter to British Foreign Secretary Boris Johnson expressing concerns about the punitive trials of prominent human rights campaigner Nabeel Rajab.
They also called on Johnson to press the Manama regime to release the campaigner.