Convicted murderer Pollycarpus Priyanto will present three experts on Tuesday in his review attempt against the Supreme Court verdict that sentenced him to 20 years in jail regarding the murder of human rights activist Munir.

Pollycarpus' lawyer M. Assegaf said the experts would explain that it would have been impossible for Pollycarpus to poison Munir with arsenic.

Assegaf argued Pollycarpus was with other airplane crew members when the flight transited in Singapore. "Thus, the poisoning [of Munir] in Coffee Bean cafe at Singapore's Changi Airport would have been impossible," he said.

The chemical and pharmaceutical experts will explain that arsenic should be mixed with plain water, [not coffee], to become poison, he added.