A hospital parking lot was inundated with victims, some treated in makeshift tents, others hooked up to intravenous drips on the pavement, while medical workers stitched up patients under the light of torches.

Victims say they were lured into Cambodia by promises of high-paying jobs at casinos and hotels but were forced to live in compounds and defraud online users with internet romances and cryptocurrency schemes.

Refugees and human trafficking survivors are being forced to choose between buying food or data to access an official digital identity check system for migrants, charities say, warning the scheme is putting vulnerable people at risk.