A media advocacy group says a murdered Mexican journalists' radio news program has been take off the air after another broadcaster was threatened.

Reporters Without Borders said Tuesday the program, Al tanto, was suspended because an anonymous caller warned the radio station the program's co-presenter, Misael Habana, would be the next target for violence.

The group says the presenter was threatened a day after journalist Amado Ramirez was killed in Acapulco April 6.

Ramirez worked as Televisa's correspondent in Acapulco.

Reporters Without Borders says he was shot three times by a gunman who followed him as he left his work place. It is not clear why Ramirez was killed.