A Shiite teenage died on Friday after he was knocked down by a car while being chased by Bahraini police during a crackdown on protesters, the opposition said.
Ali Radhi was killed as he headed to Diraz village, west of Manama, to attend prayers led by Shiite spiritual leader Sheikh Issa Qassim, in response to a call by Al-Wefaq, the main Shiite opposition formation said on its Twitter page.
"Ali Abbas Radhi is a new martyr due to the brutality of the regime," Al-Wefaq said.
It said Radhi was "ran over by a civilian car while regime forces were besieging the area and arresting citizens heading to the prayers, chasing them and treating them brutally."
The interior ministry, for its part, said in a statement that a 16-year-old pedestrian was killed in a traffic accident on Khalifa bin Salman highway.
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Al-Wefaq posted pictures on Facebook and Twitter showing Muslim worshippers trying to reach Diraz as police allegedly blocked the roads leading to the Shiite village.
Elderly people can be seen in the pictures collapsed on the ground after allegedly being targeted with tear gas.
Regular demonstrations have shaken Bahrain since it crushed a Shiite-led uprising against the ruling Sunni regime in March last year.
The kingdom came under strong criticism from international rights groups over the deadly crackdown.
Bahrain, home to the US Fifth Fleet and strategically situated across the Gulf from Shiite Iran, has continued to see sporadic demonstrations, though mostly outside Manama.
According to the International Federation for Human Rights, a total of 80 people have been killed in Bahrain since the violence began on February 14, 2011.