A nearly 2,000-foot-long tunnel stretching from Tijuana to Otay Mesa was recently discovered by law enforcement officials, leading to federal drug distribution charges announced Monday against four people.

According to the U.S. Attorney’s Office, the tunnel led into a fake store in Otay Mesa called “Buy 4 Less,” which investigators have been surveilling since December “due to suspicious activity.”

Investigators regularly saw a group of supposed employees in and around the store, though the location “did not appear to be consistent with a normal retail location” and featured “minimal foot traffic from customers coming in and out of the Buy 4 Less store,” according to he U.S. Attorney’s Office.

Last Friday, agents stopped a van and two trucks that either departed Buy 4 Less or received cargo from a vehicle that had left the store.

Inside the three vehicles, agents found a combined 2,269.87 pounds of cocaine in more than 850 packages, the U.S. Attorney’s Office said.

The Buy 4 Less store was searched, revealing the tunnel’s exit point, which was hidden beneath the floor of a storage room.

The U.S. Attorney’s Office says the tunnel is about 55 feet deep and extends 1,064 from the store to the U.S.-Mexico border, then is estimated to extend another 800 feet to its entry point. The tunnel is accessed by “a sophisticated hydraulic lift” and is equipped with electricity and ventilation, prosecutors said.

The tunnel is approximately 265 meters long and 6.30 meters deep, or about 869 feet long and 21 feet deep. NBC 7’s Jenette Quezada reports.

Charged in the case are Gregorio Epifanio Hernandez Lopez, 29, of San Diego; Jose Jimenez, 32, of San Diego; Antonio Cortez, 18, of Mexico; and Brandon Escalante Sandoval, 26, of Mexico. Prosecutors say the defendants were spotted driving the vehicles in question prior to being stopped by agents. If convicted, the four defendants could face life in prison and a $10 million fine.

“Cocaine is now the lifeblood of the cartels and what you see here today is a cardiac arrest for their system and those defendants,” said U.S. Attorney Adam Gordon at a news conference on Monday.

“They thought they saw the light at the end of the tunnel. In fact, what they saw were our lights and sirens,” Gordon added.

“Make no mistake. Had the cartel been successful, thousands of pounds of dangerous drugs would have been distributed throughout the entire country and beyond,” said Justin de la Torre from the U.S. Border Patrol.

Authorities are continuing to investigate this incident, but federal officials have already claimed it as a major victory.

According to the U.S. Attorney’s Office, the tunnel is one of 99 discovered in the Southern District of California since 1993, and the first since 2022.