BANGOR — Two Texas residents arrested in what authorities call Maine’s largest bath salts bust have pleaded not guilty.

Authorities say 31-year-old Elizabeth Fuentes and 49-year-old Arthur Coy, both of Houston, pleaded not guilty Tuesday in Penobscot County court to drug trafficking charges.

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They were among four people arrested in Hermon in January when authorities also seized 18 pounds of the synthetic drug with a street value of more than $1.2 million.

Authorities say the drugs were manufactured in China and imported to Maine and Texas.

WABI-TV reports that two Maine men were also charged in connection with the case.

Bath salts is a synthetic hallucinogen that can make users delusional and violent.