A father who lost his son to synthetic cannabis said dealers continued to harass his boy after he'd finished a detox programme.

Calum Jones died after smoking the psychoactive substance.

READ MORE: Synthetic cannabis - a fatal addiction

His father Lewis Jones said his son had completed a detox programme after becoming addicted to the substance and voluntarily went to rehab.

But Mr Jones, told Larry Williams the 22-year-old was sent home too quickly and as soon as he was home, suppliers pressured him into purchasing more.

"He was being text bombed by some other syndicate or organisation trying to get a hold of him to supply him stuff."

LISTEN ABOVE AS LEWIS JONES SPEAKS WITH LARRY WILLIAMS