Calls are mounting for a deeper investigation into the unrest that followed Thursday’s largely peaceful protest in Jakarta, with authorities urged to establish who mobilized the crowds and how they were able to sustain hours of clashes despite a massive police presence.

Since early Thursday, authorities have implemented traffic diversions around areas expected to be crowded with protesters. Police blocked several roads in the capital, including…

The protestors also demanded other political and social reforms. More than 18,000 security personnel were reportedly deployed across Jakarta to maintain order.