A Bahraini policeman has died of his injuries following a bombing at an anti-government protest on Thursday night, the interior ministry says.
A statement said the "terrorist" attack happened during clashes in al-Akr, a village about 20km (12 miles) south of the capital, Manama.
Another policeman was injured by the blast at the demonstration, organised by the 14 February Youth Coalition.
At least 60 people have been killed since protests began in February 2011.
Opposition supporters have been demanding more democracy and an end to what they say is discrimination against the majority Shia Muslim community by the Sunni royal family.
Those who took to the streets of al-Akr, a predominantly Shia village, chanted "The people want to topple the regime" and "Down Hamad", referring to the king.
The interior ministry said the bomb that targeted the riot police officers deployed in al-Akr had been "home-made".
Bahraini police have been the target of several bombings in the past year.
