Officers are appealing for information following a burglary in Portsmouth.
At around 2.40am on Friday, 18 January a large van, with three men inside, drove into Queen Alexandra Hospital and stopped near to the storage area of Nitrous Oxide canisters.
Two men got out of the van and forced entry to the storage area. They then put nine canisters, similar to the ones pictured, inside the van and drove off.
Nitrous Oxide has a number of legitimate uses. However, in the wrong hands it has also been used as a recreational drug.
Officers are keen to speak to anyone who has been offered any of these items of sale, or anyone who knows who may be responsible for this incident.
Anyone who has any information about this incident or anyone offered these canisters for sale should call 101 quoting 44190020822.