The BSE Sensex slid 285 points to close at 19,008.10 after staying volatile on a day that began with RBI reducing the repo rate and saw the government on the brink as DMK said it would withdraw support. The summons issued by the CBI special court to key people from top telcos added to the nervousness. The 1.85% decline in the index was the biggest in about a month. A look at how the Sensex moved. (Click on graphic)