Nine female medics detained by Myanmar soldiers during a raid this month have been sent to prison after a week of questioning, with several allegedly suffering brutal treatment at the hands of their interrogators, according to an RFA report.

The nine women, most of them university students and all between the ages of 17 and 21, had joined a People’s Defense Force (PDF) battalion set up to resist military rule, and are now being held at Kalay Prison in western Myanmar’s Sagaing region, sources said.

Six of the women were seized in a raid in Kalay township on Nov. 16 and were taken to the prison on Nov. 24. The three others who were detained later and held for further questioning arrived at the prison on Sunday, a spokesman for Kalay PDF Battalion No. 3 said in a statement.