Narendra Modi's BJP faced one of its biggest challenges in 12 years in power from youth protests over issues ranging from school infrastructure to jobs. (EPA Images pic)NEW DELHI: Authorities closed six metro stations and warned of traffic disruptions in Delhi on Monday, as opposition parties planned to march to the Supreme Court in protest against a controversial revision of voter lists that has sparked days of unrest in the Indian capital.

Opposition parties and supporters of the "cockroach" youth movement have taken to the streets almost daily this month to demand the resignation of chief election commissioner Gyanesh Kumar over the revision that critics say benefits prime minister Narendra Modi's Bharatiya Janata Party (BJP).