A 53-year-old District man was found guilty Thursday of operating a large-scale crack cocaine and marijuana business from a house he rented in Northeast, authorities said. 

A jury in the District’s federal court convicted Thomas Washington of charges including possession with intent to distribute at least 28 grams of cocaine, authorities said. He faces at least 15 years in prison.

For the past several years, Washington rented a house on the 3000 block of Yost Place NE where he stashed drugs and conducted business, according to authorities. 

On Sept. 27, 2009, police found approximately 129 grams of crack cocaine, over 1 kilogram of marijuana, over $25,000 in cash, and several firearms, including a semi-automatic machine pistol, according to evidence.

Washington owned a different house on the same block but rented the second to run his drug business, authorities said.

Washington is scheduled to be sentenced on Oct. 21.