They also confiscated a Lamborghini and a Porsche from the house in Soi Navamin 149 where the drugs were found.
Three suspects were taken into custody — Arthit Rati-anant, 35, Anuwat Sarisith, 29, and Rachan Leeta, 27.
Pol Lt Gen Rewat Klin-kesorn, commander of the drug suppression unit, said the officers caught Mr Arthit while he tried to drive away. He then had a seizure and fell unconscious.
After checking his records, police found Mr Arthit had escaped while on bail in a previous drug case and was under two more arrest warrants. His flight on bail earlier had also caused a Min Buri Court judge to lose his job for granting the bail.