DELAWARE COUNTY, Pa. – Customs and Border Protection officers are no strangers to seizing illegal drugs, but even they say this local find was an unusual one.

A total of 170 pounds of marijuana worth about $800,000 was found Monday in an international shipping warehouse in Delaware County.

Officials in Philadelphia say the drugs were sent in 35 packages from California and were en route to the United Kingdom, where the drugs could sell for 2-3 times their street value in the United States.

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“This is an unprecedented number of export marijuana packages that we’ve seen, but there are also packages that London consumers won’t see,” said Cleatus Hunt, CBP’s area port director for the Port of Philadelphia.

Federal law prohibits the transportation of marijuana across state lines or its export from the United States.

Officials did not provide additional details about possible suspects or arrests.