EXCLUSIVE

The "Buckwild" star who was busted in a drug raid was cowering in a shed when the you-know-what hit the fan, and cops allegedly hauled in a bunch of drugs and money ... TMZ has learned.

The Police Chief in Summersville, West Virginia tells us officers arrested Salwa Amin and 2 other men after an extensive day of surveillance.

According to the chief, his drug task force got a tip that a "shipment" would be delivered to the home in Nicholas County sometime on Sunday.

The chief says they observed a lot of foot traffic coming in and out of the house -- and says the people were only staying for very brief periods of time ... so they immediately obtained a search warrant, and then launched the raid.

Salwa, Shawn L. Booker and Jason D. Jones -- who owns the home -- were found hiding in a shed in the backyard, according to the chief.

We're told Salwa had a "quantity of Oxycodone" in her purse -- and Booker had a "large amount of money" on him.

Additionally, police say they found 3 separate packages of heroin in the shed. They were unclear about a specific quantity of the drugs.

According to police, Jones rolled over on Salwa and Booker ... claiming they transported the drugs to his house with intent to distribute.