A California man has changed his plea to guilty in the seizure of more than 7 pounds of methamphetamine — the largest amount seized in a single incident on Kauai.

Steve Pete Orozco II pleaded guilty Thursday before U.S. District Judge Susan Oki Mollway to meth distribution and firearm-related charges. Orozco had previously pleaded not guilty to charges of drug conspiracy and methamphetamine distribution.

Sentencing is scheduled for Sept. 12 on two counts of intent to distribute methamphetamine, for which he faces life imprisonment and a fine of up to $10 million for each count, and one count of possession of a firearm, for which he faces up to 10 years in prison and a $250,000 fine.

Orozco was convicted in California in 2013 on felony drug charges and was prohibited from having a firearm.

He recently moved to Kauai and was living with his cousin Andrew Martinez at a Laukona Street home.

Martinez pleaded not guilty last week to meth distribution charges.

Kauai police arrested Orozco and Martinez on March 8 in connection with a drug deal at a Walmart parking lot after an informant bought 85.8 grams of methamphetamine, police said.

Following the drug deal, a search warrant was executed at the Laukona Street home, and officers seized nine gallon-size plastic bags containing about 7.3 pounds of methamphetamine. Police estimated the drugs had a street value of $1.6 million.

A stolen semi-automatic 9 mm handgun with its serial number scratched off was also recovered.