Datchinamurthy Kataiah, 36, was charged with smuggling 44.96gm of diamorphine into Singapore in 2011 and sentenced to death in 2015.

Ravi claimed the upcoming execution was a contempt of court, as there was a suit pending against the Singapore attorney-general.

This follows the planned execution of another Malaysian, Nagaenthran K Dharmalingam, 34, next Wednesday for smuggling 42.7gm of heroin into the city state in 2019.

Nagaenthran, from Perak, is said to have an IQ of 69 – a level recognised as a disability.

Ravi said the suit against the Singapore attorney-general was related to an alleged snooping by the AG over correspondences made by Datchinamurthy in prison to his lawyers.

He told FMT the letters, which discussed trial strategies, among others, were discovered after the prosecution submitted them to the court during a hearing.

Ravi, who is a spokesman for lawyer LF Violet Netto representing the inmate, said the case would be heard on May 20.

He said given such circumstances, it would be contempt of court if the execution was to go on as scheduled.

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