Large quantities of synthetic drugs have been seized by police in a series of raids across Queensland.
It comes after two men aged 33 and 41 died after separately using synthetic cannabis in Mackay this week.
Police raided a sex shop in Mackay on Wednesday afternoon and removed boxes as part of an investigation.
Further searches have also been conducted at adult stores in Rockhampton, Bundaberg, Mackay and Toowoomba, police said.
Inspector Darrin Shadlow said an investigation had been stepped up after the two deaths.
“Both persons were believed to be smoking the synthetic cannabis Full Moon just prior to them collapsing,” Inspector Shadlow said.
“One of the male persons in Mackay only had one draw of the smoke and never regained consciousness.
“So we really want to get the message out there to the public that this stuff that people are selling is highly dangerous.”