A calculated move to inspect a heavy chessboard paid off for customs officers at Philadelphia International Airport.

Federal officials seized more than two pounds of hashish and more than half an ounce of marijuana hidden inside the wooden game board.

The chessboard was heavier than expected, arousing the suspicion of Customs and Border Protection agents.

Agency spokesman Steve Sapp says the hash was shipped from Tanzania but he declined to say where it was headed. Officials estimated the drugs' street value at about $30,000.

Sapp says the drugs, which arrived on Saturday, will be destroyed. No arrests have been made.