A former prison officer has been arrested over allegations he was involved in a jailbreak at Phnom Svay prison in Ratanakkiri province.
Khyal Pa Ngang, 52, a member of the Krung hill tribe, is accused of helping five prisoners escape.
Phnom Svay prison director Tin Sovanny said the inmates broke loose from prison at about 2am on May 27.
Two who were in prison on drug trafficking and timber logging charges were caught within hours.
The whereabouts of the remaining three is unknown.
“The inmates broke out of jail after they used a key to open the jail door while Mr Pa Ngang was on guard duty,” Mr Sovanny said
“But he did not raise the alarm.”
Mr Sovanny could not say whether the key used by the inmates to open the prison door was provided by Mr Pa Ngang, but he accused the guard of trying to make trouble so the Interior Ministry would remove him from his job.
“This was not the first jailbreak in the prison, but the third jailbreak that he did not raise the alarm,” Mr Sovanny said.
“Previous inmates used blades to cut the bars of their prison cell.”
Mr Pa Ngang’s daughter, who declined to be named, said her father was not involved in the jailbreak.
“It’s impossible that my father helped inmates to break out of jail,” she said.
She said police arrested her father after he failed to appear in court for a third time.
“The provincial court had issued subpoenas for my father to be questioned at the court but he did not attend because he was finding a lawyer to help him,” she said.
Mr Pa Ngang is being detained in Stung Treng provincial prison as investigations continue.