Christchurch police have arrested a 22-year-old man and demanded the removal of two social media pages during a crackdown on the sale of synthetic cannabis.
The substance was made illegal in May and Christchurch field intelligence officer Constable Darren Sims said police had noticed ''a dramatic increase'' in its availability through social media sites since then.
Police were receiving tip-offs from members of the public on a regular basis, because people were passionate about getting the illegal substances off the streets, Sims said.
''We have identified and spoken to people selling and offering to sell drugs on social media sites and warned them about their actions,'' he said.
''If they choose to carry on then we will take the next step and prosecute.''
Anyone with information is encouraged to contact Christchurch police on (03) 363 7400.
They can also email firstname.lastname@example.org or get in touch through the ''Christchurch police'' Facebook page.
- The Press