Two youths have been arrested after searches were carried out in Northumberland and North Tyneside.
At 1.20pm on Monday, December 8, police were informed a number of substances had been found inside an address in Melrose Avenue in Seaton Delaval.
A search was carried out of the property and a number of items were taken away for examination. Tests are being carried out to establish what the substances are.
A second address in Longridge Drive in Whitley Bay was also searched, and two youths aged 16 and 15 have been arrested.
Superintendent Mick Paterson said: “As a result of concerns that had been raised, a search was carried out of the property.
“Tests are being carried out on the substances, however, as individual items they are believed to be innocuous.
“Enquiries are on-going to establish the circumstances around why the youths had the substances although it’s believed the youths were carrying out an experiment. Officers will be working with local schools to raise awareness of the dangers of carrying out chemical experiments outside of school and controlled environments.”