Bangkok authorities discovered 13 irregular household registrations across 9 districts where each address falsely lists 16+ migrant residents—typically in factories, flats, and rental houses. The BMA is launching individual investigations and a special task force review following a previous case where 1,400+ migrant children were illegally registered at public housing, implicating three district officials. This reveals systemic vulnerability in Thailand's identity and residency registration system used by foreign nationals to access public services.