A late-night police raid on a dance hall in Kaohsiung turned up drugs, wanted suspects, and overstaying migrant workers — bad news for the venue's crowd, most of whom were hauled in for testing.

• Police in Kaohsiung's Daliao district raided a dance hall after midnight and found drug "coffee packs," ketamine-laced cigarettes, unidentified pills, and drug paraphernalia.
• More than 200 people at the scene were taken back to the station for ID checks, statements, and urine tests.
• Among those caught were 21 migrant workers who had overstayed their visas and gone off the grid, plus one man wanted for fraud.
• No one admitted owning the drugs, so police are relying on lab results and seized evidence to build the case.
• The operation was a joint effort with the city's drug-control bureau, fire department, and immigration agency, targeting spots where drugs and migrant workers gather.

Outlook: Charges will depend on the urine tests and evidence analysis, and police say more surprise raids on high-risk venues are coming.