TAIPEI (Taiwan News) — Police have warned the drug A-PiHP is becoming more common in Taiwan after it was discovered in a recent drug bust in Taichung.

Taichung Police Department said Thursday (Sept. 12) that seven arrests were made after there was an investigation into the sale of “designer drugs” carried out between May and August, per CNA. Police said the synthetic cathinone A-PiHP, dubbed “rainbow cigarettes,” was seized in the bust, along with other synthetic cathinones and ketamine.

Synthetic cathinones are sometimes referred to as “bath salts” in English and are commonly mixed with other drugs and sold as “coffee bags” in Taiwan. Police said 26 rainbow cigarettes, 350 coffee bags, 50 grams of ketamine, and other equipment used for distributing drugs were seized in the raid.

Police said that A-PiHP is categorized as a class three drug in Taiwan and has “rapidly emerged” in recent years. Consuming A-PiHP can cause lung and kidney damage, convulsions, vomiting, and muscle breakdown, police said.

Police noted that A-PiHP is no less dangerous than etomidate, which has also become increasingly common of late.

The group selling the drugs operated out of a warehouse in Taichung’s Beitun District and was led by a 30-year-old man surnamed Lai (賴). Police said the group used instant messaging apps including WeChat to advertise the products.