Bahrain said on Sunday it had broken "terrorist cell" suspected of involvement in a bomb attack on a police bus in February and plotting to assassinate senior officials, Reuters reported citing state news agency BNA reported.
The agency quoted an Interior Ministry statement as saying that the 14-member cell was working under direct supervision from two exiled Bahrainis living in Iran, one of them recently designated by the United States as a "global terrorist".
Tensions have been rising in the kingdom since last year after authorities stepped up a crackdown on dissent, banning the main opposition group al-Wefaq, arresting a leading activist and critic of the government and revoking the citizenship of the spiritual leader of the country's majority Shi'ites.
They are suspected of a bomb attack on a bus in February that injured five police officers, the agency said. The group is also suspected of plotting to attack "senior officials", the statement said but gave no further details.
It said weapons, locally-made explosives and communication equipment had been seized from the homes of the suspects.
Earlier this month, Bahrain announced it had uncovered a group comprising 54 members suspected of involvement in attacks on security forces, including organizing a prison break in January, and seizing automatic weapons.
Bahrain in February executed three men convicted in the death of three policemen, including an Emirati officer, in a 2014 bomb attack.