Mobile police brigade officers (Brimob) stand guard outside the General Election Commission (KPU) headquarters ahead of the announcement of the presidential election results after the last month election in Jakarta, May 20, 2019. Police rolled out more barbed wire on Monday to tighten security outside Indonesia's election agency and readied armoured trucks and water cannons to quell any civil unrest when official results of a presidential poll are released this week. REUTERS/Willy Kurniawan

Barbed wires are seen outside the General Election Commission (KPU) headquarters ahead of the announcement of the presidential election results after the last month election in Jakarta, May 20, 2019. The result is expected to confirm unofficial counts by private pollsters that put incumbent President Joko Widodo about 10 percentage points ahead of challenger Prabowo Subianto. REUTERS/Willy Kurniawan

A woman walks passed a metal detector as she enters the General Election Commission (KPU) headquarters, ahead of the announcement of the presidential election results after the last month election in Jakarta, May 20, 2019. REUTERS/Willy Kurniawan

Mobile police brigade officers (Brimob) stand guard outside the General Election Commission (KPU) headquarters ahead of the announcement of the presidential election results after the last month election in Jakarta, May 19, 2019. TEMPO/M Taufan Rengganis

Mobile police brigade officers (Brimob) stand guard outside the General Election Commission (KPU) headquarters ahead of the announcement of the presidential election results after the last month election in Jakarta, May 19, 2019. TEMPO/M Taufan Rengganis