More than 160 suspected illegal immigrants working in a hot, cluttered rag factory were detained Wednesday in one of the largest immigration raids in Houston in nearly two years.

The detainees are from Mexico, El Salvador, Guatemala and Honduras.

About 60 may qualify for temporary release, if they have so-called humanitarian issues, such as health needs, or are sole caregivers to children.

About 70 percent of those detained were female – eight of whom were pregnant – and two minors were released to members of their family.