Two protesters rammed their vehicles into nine Bahraini policemen, making the violent incident the latest in the protest-hit Gulf State, an Al Arabiya correspondent reported on Tuesday.
The run-over incident by the two protesters who were arrested, left two of the policemen fatally wounded, the correspondent said.
The names of the victims and the suspects were not released by early Wednesday.
While the Shiite-led opposition movement in Bahrain that seeks a constitutional monarchy accused the government of a violent crackdown against protesters, the Bahraini government asked the United Nations to verify such "allegations."
The Associated Press on Tuesday reported Bahrain’s acting health minister was inviting the UN to send a team to the Gulf State to investigate allegations of human rights abuses during the military takeover of a hospital in March.
The minister, Fatima al-Balooshi, said she spoke to the head of the World Health Organization on Sunday and proposed that the global body form a team to independently investigate the incident at Bahrain’s state-run Salmaniya hospital.
Human rights groups say soldiers and police conducted interrogations and detentions after anti-government protesters were treated there, according to Reuters.
Ms. Al-Balooshi told reporters in Geneva on Tuesday that Bahrain has "nothing to hide."
Forty-seven doctors and nurses at the hospital have been charged with offenses including assault, embezzlement and possession of weapons.
Meanwhile, a prominent Bahraini human rights activist said he had been threatened with rape while in custody after he refused to apologize to the king over his role in anti-government protests, Reuters reported.
Human rights groups said Abdulhadi al-Khawaja, former president of the Bahrain Centre for Human Rights (BCHR), was removed from a military court on Monday on the third day of his trial after he told the judge about his treatment.
He said that despite prior complaints the court had not taken action to secure his safety.
"The judge refused to listen to these statements and Mr. al-Khawaja was ordered out of the courtroom," BHCR and Bahrain Youth Society for Human Rights said in a joint statement, as reported by Reuters.
The interior ministry media office said no one was available to comment on the report. Other officials could not be reached by Reuters.
Mr. Al-Khawaja is one of 21 activists charged with trying to topple the Sunni-led government during weeks of popular Shiite protests, calling for greater political freedoms, an end to sectarian discrimination and a constitutional monarchy.
Many supporters of the government contend that the protests have been fanned by Iran, a Shiite-majority nation, and that the demonstrators in Bahrain are out to destroy the Sunni monarchy.
Observers—as well as news agencies—point out that the Bahraini unrest appears to have created a fault line in the region. Shiites in Iraq, Lebanon and Iran have mostly showed solidarity with Bahraini Shiites. Iran has been actively encouraging protestors, much to the chagrin of the Bahrain authorities.
At least 29 people, all but six of them Shiites, have been killed since the protests started in February, Reuters said.