U.S. Customs and Border Protection seized on July 14 nearly $16,000 in counterfeit Polo Ralph Lauren shirts that arrived earlier in air cargo at Washington Dulles International Airport.

The shipment arrived as air cargo from Pakistan on June 29 and was destined to a location in Northern Virginia, according to CBP. The agency said it then detained the collared Polo Ralph Lauren shirts and learned that the consignee did not have authority to import the shirts.

The trademark holder then notified CBP that the 159 Polo shirts were counterfeit, at which point CBP seized the shirts.

If authentic, the Polo Ralph Lauren shirts would have had a total estimated manufacturer’s suggested retail price of about $15,582.

“Customs and Border Protection will continue to work closely with trademark holders and our consumer safety partners to seize counterfeit and substandard merchandise that pose potential threats to American consumers and hurt American businesses,” said Wayne Biondi, CBP’s port director for the Area Port of Washington Dulles. “Intellectual property rights enforcement is a CBP priority trade issue, and a mission that we take very seriously.”

To protect private industry and consumers, CBP has made Intellectual Property Rights enforcement a CBP Priority Trade Issue. CBP routinely conducts inspection operations on arriving and departing international flights and intercepts narcotics, weapons, currency, prohibited agriculture products and other illicit items.

On a typical day during 2015, CBP seized $3.7 million worth of products that violate IPR laws at 328 U.S. ports of entry.

In fiscal year 2015, 28,865 seizures of counterfeit and pirated goods, with an estimated value of $1.3 billion, were made.

Apparel and accessories, along with watches and jewelry, were the top product categories for the number of IPR volatile shipments seized. Watches and jewelry, along with handbags and wallets, were at the top of the list for MSRP value. Tactical interagency collaboration with the National Intellectual Property Rights Coordination Center resulted in 538 arrests, with 339 indictments and 357 convictions.

China remained the primary source economy for counterfeit and pirated goods seized, accounting for a total estimated MSRP value of $697 million, or 52 percent of the estimated MSRP value of all IPR seizures.