YEREVAN -- Armenian authorities have launched an investigation into the November 5 clashes between police and nationalists in Yerevan.
The Interior Ministry said the leader of the nationalist Tsegakron party, Shant Harutiunian, his son, and 18 of his supporters remain in custody and have been charged with violence against authorities and property damage.
Thirty-eight protesters were arrested after clashes between police and dozens of nationalists, who threw firecrackers while trying to march to the presidential office building in Yerevan.
Eighteen were later released and asked to testify later as witnesses in the case.
Harutiunian announced earlier that he and his supporters planned to organize what he called a "revolution," promising to blow up the presidential office building. Nine people -- a 16-year-old teenager and eight police officers -- remain in hospital.