Photos subsequently emerged of the Cambodian soldiers during the crackdown.
Hundreds, possibly thousands, of people were killed during the crackdown.
The commission investigated government errors and human rights violations during the crackdown.
Authorities say around 24 people, most of them demonstrators, have been killed during the crackdown.
So far, four people have been criminally charged during the crackdown.
At least 260 people have been killed in Kashmir during the crackdown.
Protesters injured during the crackdown on dissent in Homs were said to be taken to the military hospital for treatment.
Among those detained was Ding Zilin, 67, whose son was fatally shot during the crackdown and who is a leader of a protest group called the Tiananmen Mothers.
The king, speaking during the televised news conference, said that officials who engaged in abuses during the crackdown would be held accountable and replaced.
Security officials say he was detained without charge by the Egyptian authorities during the crackdown on Islamist groups after the assassination of President Anwar el-Sadat in 1981.
The sentences were announced by the state-run Bahrain News Agency on Thursday, during the crackdown by the ruling Sunni dynasty against Shiite-led protesters.
