The order comes after election officials received letters demanding they set aside the ballots of possible non-citizen voters.
The case, part of the "Farmgate" scandal, has left President Cyril Ramaphosa mired in an impeachment saga.
The move comes barely a week after Rwanda's defence ministry was hit with sanctions by the US Treasury.
A rights group will argue the world-leading policy robs under-16s of their right to free communication.
Many Ukrainians, who have faced years of Russian attacks, did not take the messages seriously and doubted their veracity.
Local officials say 27 people are missing after at least nine 3,000kg aerial bombs hit a village in southern Ukraine.
Though unprecedented, the six-day truce has done little to alter the wider trajectory of a war that continues to grinds on.
Jos Leijdekkers has been found guilty in absentia of cocaine smuggling and is believed to be in Sierra Leone.
A Hungarian fighter jet escorted the aircraft to Budapest after the threat was received mid-air.