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.

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.