"All death penalty will be abolished. Full stop. Since we are abolishing the sentence, all executions should not be carried out," Liew was quoted as saying by The Straits Times online newspaper.
The minister stressed that various aspects must be taken into account when determining the punishment.
"Drug-related offenses will be different and consideration must be given to convicts who, for example, were drug mules, as compared to those who committed heinous crimes," he noted.
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The bill on abolishing the capital punishment will be submitted to the parliament during its session starting on October 15.
Capital punishment is a legal penalty in Malaysia for grave crimes such as murder, drug trafficking, treason, and child sexual abuse.