PHNOM PENH - Cambodian officials say a man in Battambang province has been arrested and charged with infecting at least 140 people with HIV in what authorities described as "cruel murder."

Authorities said Yem Chrin, 55, had been in custody since last week and was charged Monday following an investigation into the outbreak in Roka commune.

Cambodian Man Faces Charges in HIV Outbreak

Police said Yem Chrin was operating an unlicensed clinic and was not licensed as a doctor.

Cambodian Man Faces Charges in HIV Outbreak

Battambang’s police chief, Sar Thet, said Yem Chrin confessed to using the same syringe and sometimes the same needle on patients.

Cambodian Man Faces Charges in HIV Outbreak

The Pasteur Institute in Phnom Penh has confirmed 140 HIV infections in Roka.

Mean Chhivun, director of the National AIDS Authority, said many elderly are among those infected and an investigation continues to learn the extent of the outbreak. Health officials have been administering tests to worried villagers for two weeks.

Those residing in Roko commune in Battambang province are not considered at high risk, said Marie-Odile Edmond, Cambodia’s country director for UNAIDS, the lead United Nations organization combating the disease.

Cambodia’s government previously had announced a goal of no new HIV infections by 2020.