POLICE say $30,000 worth of ecstasy, ammunition and a firearm were seized during a police exercise in central Trinidad on Thursday.
Officers also found $100,000 worth in marijuana.
Five Venezuelans were among 13 people arrested for alleged possession of the narcotics, as well as a loaded AK 47 rifle with 77 rounds of 7.62 ammunition.
Police say the suspects, aged between 18 to 44, were detained during raids at Freeport, Enterprise and Cunupia.
They are expected to be charged and taken before a Chaguanas Magistrate.
Ecstasy, also known as the "love pill", Molly and MDMA, is a synthetic drug that alters mood and perception. It is chemically similar to both stimulants and hallucinogens, producing feelings of increased energy, pleasure, emotional warmth, and distorted sensory and time perception.
MDMA was initially popular in the nightclub scene and at all-night dance parties but the drug now affects a broader range of people.