Manama: Bahrain's state news agency says military prosecutors have asked the country's highest court to review two death penalty sentences linked to anti-government protests.

A special security court issued the sentences last month for four people convicted of killing two policemen during the unrest. Two of the sentences were reduced to life in prison and two death sentences were upheld.

Bahrain's general military prosecutor told the official Bahrain News Agency on Thursday that the capital punishment verdicts will be re-examined by the civilian Court of Cassation. No timeframe was given.

Rights groups have denounced the death sentences.