A Vancouver printing company believes they have uncovered an international LSD trafficking ring that is shipping drugs using their name.

Over the past six months, JukeboxPrint.com says they received three pieces of mail, which at first glance, appeared to be returned to them because of a wrong address.

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The company sent these stickers to a lab and discovered they were laced with LSD. (CBC)

But upon closer inspection, operations manager Scott Mills said something was clearly amiss.

The envelopes were printed with low resolution Jukebox logos, and inside, entire paragraphs from the company’s website were lifted and printed on a flyer. But tucked in between the pages were small, square stickers.

"The stickers were a little eerie looking," Mills said. "They had psychedelic pictures on it. They were thicker."

Mills said the company called Vancouver Police, but the last officer they spoke to said the mystery envelopes were just junk mail and advised them to put the letters in the garbage.

But Mills sent the stickers to a lab instead and discovered they were laced with LSD.

The illegal hallucinogen – which is odourless, colourless and tasteless – is often painted onto small pieces of paper that people lick or swallow.

"Our worst fears were realized," Mills said. "It could potentially be a drug smuggling ring going internationally because each of the three envelopes that we got returned were from the States."

The Gastown-based company, which prints and ships business cards and other promotional materials to people and businesses all around the world, says they want people to know they are not shipping LSD.

Mills worries that the printing materials Jukebox sends to its clients could be flagged by international customs.

Meanwhile, Vancouver police now admit it was a mistake to dismiss the company’s concerns.

"We’re taking this very seriously. This may be the tip of the iceberg," said VPD spokesman Sgt. Randy Fincham.

"There may be a small number of packages returned to the company but possibly a larger number reached their intended recipients, whether in the U.S., other areas in Canada or possibly foreign countries."

There is one potential clue found on the envelopes: the cancellation mark applied on the postage stamp indicates the letters were originally mailed from Vancouver, which means whoever stole Jukebox's identity isn't far away.