Three women who arrived back in Australia after spending years in Syrian detention camps have been charged, with one facing an allegation of joining Islamic State and two others facing allegations of crimes against humanity, The Guardian reported. 

The women were among a group of 13 women and children who arrived on separate flights – one into Sydney and one into Melbourne – on Thursday evening.

Two women from the group – Kawsar Abbas, 53, and her daughter Zeinab Ahmad, 31 – were arrested by officers from the Victorian joint counter-terrorism team (JCTT) at Melbourne airport.

Abbas and Ahmad were charged with crimes against humanity including enslavement and using a slave. Abbas was also charged with possessing a slave and engaging in slave trading, Australian federal police confirmed on Friday, according to The Guardian.