Well-known Afghan journalist Sayed Hamid Noori died on Sunday after being found with stab wounds outside his Kabul home.
President Hamid Karzai issued a statement ordering authorities to spare no effort in bringing the killers to justice.
Noori, a former state television presenter and newspaper editor, was vice president of Afghanistan's Association of Independent Journalists (AIJ) and a teacher of young journalists.
AIJ president Abdul Hameed Mubarez said Noori had left home after receiving a series of phone calls, suggesting that he either knew his assailants or had been set up.
Source: AP/ABC