In the early morning of April 4, the owner of a Richmond marijuana concentrate company walked into his Concord home after spending the night in San Francisco, he almost instantly felt the muzzle of a gun press against the back of his head.

“Get on the ground,” an armed robber told him. He did as he was told, and crawled on his hands and knees into the kitchen. A few seconds, a woman he was with, Brittney La Pierre, walked into the home and was greeted with the same treatment.

Over the next few minutes, two robbers would threaten the man with a gun, hog tie him with wires from a television, and — in a move that has baffled chemistry experts — doused him with a mixture of Pine Sol and sugar. They searched the home for valuables, and made off with nearly $50,000 in cash and jewelry, along with a brand new Chevy Silverado.

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