LONDON, May 17 (Reuters) - Bahraini security forces raided the house of top Shi'ite cleric Ayatollah Sheikh Isa Qassim on Friday, the opposition said, an act likely to enrage the island's majority Shi'ite population which is at loggerheads with its Sunni rulers.
Bahrain, where the U.S. Fifth Fleet has its base on Iran's doorstep, has been in violent turmoil since Shi'ite-led pro-democracy protests erupted in 2011.
Protests continue and often end in clashes between demonstrators and police. At least two people have died this year.
Security personnel forced open the door of Sheikh Isa's home in the village of Duraz in the early hours of Friday morning and searched the house, Bahrain's main opposition bloc al-Wefaq said on its website.
Women and children from the sheikh's family were in the house at the time of the raid, but the sheikh was not at home, al-Wefaq said. No one was hurt.
A Bahraini government official had no immediate comment.
A leading Bahrain human rights activist said the reason for the raid was not known, but he believed security forces had entered the sheikh's house in pursuit of some fugitives who had fled there from a neighbouring house.
"This is the first time (his house was raided) and it's hugely offensive for a huge number of Shi'ites in Bahrain," said Mohammed al-Maskati, president of the Bahrain Youth Society for Human Rights.
"People see him as a red line. I expect that this will cause a big reaction." (Reporting By Raissa Kasolowsky; Editing by Tom Pfeiffer)
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