Just over one pound of cocaine was found neatly stashed in five sealed brown envelopes with Christmas cards at the Post office in Georgetown.
The cocaine-filled cards were destined for Brooklyn, New York. The bust took place on Friday.
In a statement, the Customs Anti Narcotics Unit said the cocaine carried a total weight of 647.6. grams with an estimated street value of $3.4 Million.
There have been no arrests, but the investigations are still ongoing as CANU tries to track down the sender.