The 24-year old UCSD engineering student was left in the cell for five days without food or water, seemingly forgotten by the federal authorities who detained him.
He was one of seven people detained after a Drug Enforcement Administration ecstasy raid in University City on April 21, according to a DEA statement.
"The individual was at the house by his own admission," the DEA confirmed Monday.
During the raid, authorities confiscated ecstasy, marijuana, prescription medication, hallucinogenic mushrooms, and a white powdery substance that was described as a synthetic hallucinogen. They also seized numerous weapons including a Russian rifle, handguns and thousands of rounds of ammunition.
"Seven suspects were brought back to county detention." One was released, but "accidentally left in one of the cells," a statement from the DEA read.
The defendants were brought back to the DEA office after the raid and processed. The suspects were moved around the five cells at the detention facility during the proceeding. None were strip or body cavity searched, the DEA stated.
A law enforcement source told NBC 7 that the student was handcuffed and held in a room no larger than the average bathroom.
Sources say a worker at the DEA discovered the man by chance about five days later after hearing strange noises coming from the holding cells.