Authorities in Cambodia have criticised an artist after he altered photos of victims of the Khmer Rouge genocide.
Irish artist Matt Loughrey colourised images of photos taken in the notorious Tuol Sleng prison. Smiles were reportedly added to some faces.
In a Vice article, which was later removed, Loughrey said he had wanted to humanise the victims.
The brutal regime, in power from 1975-1979, claimed the lives of up to two million people.
Cambodia's culture ministry said the altering of the images affected "the dignity of the victims" and called for both Loughrey and Vice to remove them.
It said that the Tuol Sleng Genocide Museum was the lawful owner of the images. The ministry vowed to take legal action if "Matt Loughrey does not comply" with the request.
"We urge researchers, artists and the public not to manipulate any historical source to respect the victims," it said.
Loughrey told the BBC he could not comment until he had spoken to Vice.
In a statement on its site, Vice said: "The article included photographs of Khmer Rouge victims that Loughrey manipulated beyond colourisation.