A court in Cambodia has handed down a 10-year prison sentence to an American man over his involvement in sexual abuse of underage girls.

Brian David Naswall was sentenced to jail on Tuesday after he was convicted on charges of purchasing child prostitution from 2011 to 2015.

The 53-year-old had sexually abused nine girls ranging from 5 to 15 years old, said Judge Khy Chhay of Phnom Penh Municipal Court.

Naswall, who is married to a Cambodian woman and has been living in Cambodia for the past 12 years, is the CEO of Aero Cambodia, a small aviation company based in Phnom Penh.

The relatively rich American pedophile is believed to have used poverty and poor law enforcement in Cambodia to abuse the underage girls.

He was arrested in May last year in a park in Phnom Penh when he was engaging in sexual activity with one of three girls who accompanied him.

Naswall’s lawyer was yet undecided on filing an appeal, saying he would confer with his client.

Cambodian authorities have increasingly cracked down on sex offenders over the past decade in a bid to stop increasing rate of foreign pedophile activity in the country.