According to this report in The Nation, the Court of Justice will decide whether a former Thai minister is to be tried in a military or a civilian court:
Former education minister Chaturon Chaisang Monday thanked the martial court for allowing his case to be reviewed by a committee of the Court of Justice as to which court should try him.
Chaturon has been charged in the martial court for having violated a summoning order of the National Council for Peace and Order.
Chaturon argued that he should be tried by the Criminal Court, not the martial court.
Following his argument, the military court agreed to have a committee of the Court of Justice to review Chaturon's case to decide whether it should be tried in the military court or Criminal Court.
The proceeding of the case in the martial court is suspected pending a decision by the committee.