A journalist was killed again today in the Philippines, what the Committee to Protect Journalists (CPJ) calls the third most dangerous environment in the world for journalists.

Romeo Olea, aged 49, was a commentator at DWEB-FM, was killed in the Camarines Sur province. Olea was highly critical of Filipino politics.

The gunmen who shot Olea twice in the back while he was driving a motorcycle are still at large, according to police authorities investigating the attack.

Olea is the fourth journalist killed in the Philippines this year.

According to the CPJ, 71 journalists have been killed in the country since 1992, and 69 of those journalists were murdered.

On the CPJ's 2011 Impunity Index, a record of countries where journalists are slain and killers go free, the Philippines comes in third, with 56 unsolved murder investigations.