FORT LAUDERDALE, FL. — Six people — including one man recently arrested in Oakland — are facing federal charges here of participating in a trafficking ring that shipped marijuana in from California and steroids from China and South Korea.

Luis Delpino, Alon Garcia, Christopher Espinosa, Miguel R. Nunes, Jonael Mons, and Alex Sanchez were charged Oct. 1 with conspiracy to distribute marijuana and steroids. That same day, federal authorities arrested Garcia in Oakland, and are in the process of extraditing him to Florida’s southern federal district, where he is due in court.

The charges carry a maximum sentence of 20 years in federal prison.

According to the criminal complaint, authorities believe that, starting in May 2016, the group shipped 1,741 parcels to Florida, either containing marijuana or performance-enhancing drugs. The total weight of the packages was 30,000 pounds, including shipping material, but prosecutors didn’t say how much of that was suspected narcotics.

What is known, prosecutors said, is that hundreds of pounds of marijuana, human growth hormone, testosterone, and other related drugs were intercepted over the last two years.

During the course of the alleged conspiracy, several of the defendants were seen in Publix grocery stores in Hileah, Miami, and other parts of Florida making money orders. Cumulatively, the defendants wired more than $1 million to China and Oakland to pay for the drugs, authorities said.

Some of the shipments were traced back to the Zhuhai Yuancheng Pharmaceutical and Chemical Co., a Chinese company that ships anabolic steroids and other pharmaceuticals, according to the complaint.

Sanchez was arrested in the Stanislaus County city of Patterson, and allegedly found with two pounds of pot at his home there. Espinosa was arrested in Fort Lauderdale while attempting to board a flight to San Francisco, authorities said. He was carrying a bag with $67,000 in cash, and bragged in text messages about having an Uzi machine gun, according to the complaint.

Six days after Espinosa’s arrest, Nunes was arrested also trying to board a flight from Fort Lauderdale to San Francisco. He was carrying money orders totaling $50,000 and had an extra $8,000 in cash, authorities said.