Gunmen on Monday killed another Mexican journalist, Roberto Toledo, in fresh onslaughts against the media in the North American country.
Toledo was the fourth journalist to be killed by criminals murdered in less than one month.
The journalist, according to his employers, Mexico’s Michoacan State, had received death threats in the past.
The killings had already sparked protests, with press freedom groups urging the government to do more to protect journalists.
Two of those killed in recent weeks, including Toledo, had been part of federal protection programmes for journalists while one was about to join the campaign before he was felled by assassins’ bullets, the rights groups said.