Indonesian prosecutors are demanding 10-year prison sentences for a Polish globetrotter and a Papuan student who were charged with treason after meeting with independence supporters in the troubled Papua region.

Jakub Skrzypski and Simon Magal were arrested in Papua in August and accused of plotting against the state. Police also accused Skrzypski of trying to organize an arms deal but no evidence of that has been presented during the trial.

Skryzypski and Magal's lawyers weren't present for Thursday's hearing. The trial is being held in Wamena, a remote highlands town.

Lawyer Latifah Anum Siregar said the defense is scheduled to respond to prosecutors on Monday but is seeking a delay.

The case has underlined Indonesia's extreme sensitivity about the long-running insurgency in the Papua region.