On Tuesday, Canadian antiques dealer Xiao Ju Guan, also known as Tony Guan, pleaded guilty to attempting to smuggle rhinoceros horns from New York to Canada in connection with the  Operation Crash horn smuggling crackdown. Guan, 39, of Richmond, British Columbia, faces up to 10 years in prison.

Prosecutors said Guan and others also smuggled more than $400,000 of rhino horns and sculptures made from elephant ivory and coral from various U.S. auction houses to Canada.

According to the information, plea agreement, and statements made during court proceedings:

Guan, the president and owner of an antiques business in Richmond, British Columbia, was arrested on March 29, 2014, after flying from Vancouver to New York and purchasing two endangered black rhinoceros horns from undercover special agents with the U.S. Fish and Wildlife Service at a storage facility in the Bronx.

After purchasing the horns, Guan had the undercover agents drive him and a female accomplice acting as his interpreter to a nearby express mail store where he mailed the horns to an address in Point Roberts, Washington, less than a mile from the Canadian border and 17 miles from his business. Guan falsely labeled the box of black rhino horns as containing “handicrafts.” Guan indicated that he had people who could drive the horns across the border and that he had done so many times before.