Cambodian media has been reporting conflicting reasons about why Australian filmmaker James Ricketson was arrested and detained by local authorities on Saturday.
Phnom Penh deputy police and immigration officer, Lou Rabo, told the Phnom Penh Post that Mr Ricketson, 68, was arrested under suspicion of stealing information to relay abroad without permission.
"At this time, the suspect is being temporarily detained at the immigration office and there is an ongoing investigation," he told the Post.
Government-aligned local media outlet Fresh News reported Mr Ricketson intended "to steal information to the media outside the country without permission from the relevant authority".
However, Mr Rabo told Cambodia Daily that Mr Ricketson was arrested because he was living in the country without his required passport.
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"We checked for his passport," he said. "He didn't have it. This means he is living in Cambodia illegally."
But the Phnom Penh major crimes unit deputy chief, Tey Visal, said Mr Ricketson was arrested because he was flying a drone without authorisation at the opposition Cambodia National Rescue Party rally in front of the Royal Palace on Saturday.
Cambodia's local elections were held on Sunday with the CNRP announcing it had won about 46 per cent of the popular vote. This contrasts figures reported by a pro-government publication that said the opposition had won over one-third of the vote.
Official results will be announced on June 25.
This is not the first time Mr Ricketson has been caught up with the law. Last year he was found guilty of defaming an anti-pedophile NGO, Action Pour Les Enfants.
