BOSTON (CBS) – Police are investigating after small, suspicious-looking boxes were found around the city Saturday.

The boxes had notes attached that said, “Open Me.”

Cambridge police said one of the boxes was also found in that city – a tin box with a note that said, “Open Me.”

One box was destroyed by the bomb squad.

Others were opened and found to contain money and a note, which said, “Today fortune strikes. You’ve found yourself lucky enough to come across this box. You can keep the box and the treasure it holds.”

Cambridge police said via Twitter that the can appeared to be part of a marketing campaign.

Update: This possible suspicious package was identified as a tin can with the message “open me” by our Explosive Ordnance Unit. It has been investigated and cleared. Appears to be part of a marketing campaign. In the event others are located in #CambMA, please report them to CPD. — Cambridge Police👮🏽 (@CambridgePolice) August 10, 2019

One woman who opened a box she found in Cambridge said there was $50 inside.

“I made jokes in my head, but I didn’t really think it was a bomb,” said Amy Brown, who added that she plans to spend the money on margaritas.

Police said they are concerned that some of the boxes could be dangerous and are urging the public to call 911 if they find one of the boxes.

Boston Police said in a prepared statement that they are investigating whether the boxes were placed with malicious intent.

Anyone with information should call the CrimeStoppers Tip Line at 1-800-494-TIPS.