Ice ... The woman was reportedly caught with 1.5kg of methylamphetamine, like the stash pictured here from a separate Queensland Police operation earlier this year. Source: Supplied

The Seven Network reports the mother-of-four was on a flight from Shanghai to Melbourne when she was caught with the methamphetamine on a stopover in Kuala Lumpur.

The woman, aged 51, will reportedly face court on Sunday.

She could face the death penalty if found guilty.

The Department of Foreign Affairs and Trade is understood to be providing consular assistance to the Australian woman who has been detained in Malaysia.