Police say 10 people including prominent Indonesians arrested for suspected treason and other crimes planned to use a mass protest in the capital on Friday to cause chaos and overthrow the government.

The protest by conservative Muslims against the minority Christian governor of Jakarta drew some 200,000 people to the city's streets and ended peacefully.

Police made the arrests Friday before the protest began.

The eight arrested for alleged treason include Rachmawati, the daughter of Indonesia's founding president and the younger sister of former President Megawati Sukarnoiputri; retired army Gen. Kivlan Zein; and musician-turned-politician Ahmad Dani.

National Police spokesman Boy Rafli Amar said "they intended to incite people to overthrow the legitimate government."

He said police have stepped up an investigation of the group in the past three weeks.