"These women are believed to have offered themselves in sexual comfort roles to Isis fighters who are attempting to establish Islamic rule in the Middle East," an unnamed intelligence official was quoted as saying by the Malaysian Insider news portal.
The move follows a decree issued by Islamic State fighters in June ordering families to send their unmarried women for Jihad al-Nikah, or sexual jihad, he was quoted as saying.
"This concept may seem controversial but it has arisen as certain Muslim women here are showing sympathy for the ISIS struggle," he said.
DPA