A woman caught allegedly trying to sneak more than four grams of methamphetamine into Hakea Prison on Wednesday has been charged.

Corrective Services Commissioner Tony Hassall said officers from the prison’s security team intercepted the drug, which the woman carried in a balloon during an attempted visit to a male relative.

He said the targeted search on the woman was the culmination of a long running investigation by the Hakea security team.

WA Police officers attended the prison to take the woman into custody.

Commissioner Hassall said his message for people visiting the State’s prisons was clear.

“If you attempt to bring drugs, weapons, mobile phones or other illicit items onto prison property, you will be caught,” he said.

“All these items have the potential to lead to the death of, or cause serious injury to, prisoners, prison officers or other staff.

“Our key focus is to make sure our prisons remain drug free and safe. Don’t go from being a visitor to a prisoner.”

A 48-year-old Cannington woman has been charged with possession of a prohibited drug with intent to sell or supply.