BENGALURU, Oct 8 (Reuters) - Indian authorities started mass detentions of people associated with the "Cockroach" youth movement, the group said Thursday, just days ahead of a major planned protest in Delhi to demand the resignation of the nation's top poll official. India's opposition and student-led CJP movement demand election chief's resignation, plan mass demonstration Saturday. Key points and original sources are listed below.

• BENGALURU, Oct 8 (Reuters) - Indian authorities started mass detentions of people associated with the "Cockroach" youth movement, the group said Thursday, just days ahead of a major planned protest in Delhi to demand the resignation of the nation's top poll of...S1

• India's opposition and student-led CJP movement demand election chief's resignation, plan mass demonstration Saturday.S2