UNESCO, the U.N. Educational, Scientific and Cultural Organization, called on Colombia to find and prosecute those who killed Edison Alberto Molina.
The talk show host, who frequently denounced corruption on his legal affairs radio show, was killed Sept. 11 in Puerto Berrio.
"I condemn the killing of Edison Alberto Molina," UNESCO Director-General Irina Bokova said. "It is essential that the perpetrators of this crime, which threatens the rights of Colombians to debate issues of concern, be brought to justice."
Molina was reported to have received death threats. UNESCO said two other journalists had already been killed this year in Colombia.
Molina's wife, who was with him, was injured in the attack.
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