Manama: The public prosecution on Thursday evening started investigating the case of Abdul Jalil Al Singace, the spokesman of Haq Movement, a source from Bahrain's National Security Agency (NSA) said.

"The investigation is related to the network seeking to undermine national security both inside Bahrain and abroad and to damage the country's stability," the source said, quoted by Bahrain News Agency (BNA).

Al Singace was arrested two weeks ago upon his return from London amid official statements about an alleged role in an illegal network targeting Bahrain's security and stability.

More members and supporters of Haq, a movement that splintered in 2005 from Al Wefaq, Bahrain's largest society after it decided to contest in parliamentary and municipal elections, were arrested. A wave of clashes between rioters and police erupted, but senior officials said that they would not bow to pressure and that they were adamant on putting back Bahraini values into the work of all political formations. Al Wefaq said that a more reconciliatory approach would help ease tension, but the crown prince said that preconditions included reaching solutions to the crisis only through constitutional channels. Haq does not recognise the constitution promulgated in 2002.

According to the NSA sources, investigations revealed that "the suspect has led, alongside other people, sabotage cells that operated under their command."

"They provided funds and financial support to the cells under various covers to carry out acts of terror and violence in various parts of Bahrain in order to spread chaos, bring about insecurity, put innocent people's lives, freedoms and property at risk and spread false and tendentious news about the internal situation to tarnish the kingdom's reputation abroad," the source said.

The other detainees will be presented successively to the public prosecution, the source said, stressing that "stringent measures will be taken against terror instigators and outlaws both inside Bahrain and abroad in order to preserve public security."