Officials say no bombs were found when the schools were searched and an investigation is on.
The writer was best known for The New York Trilogy and gained cult status in the 1980s and 90s.
India's competition watchdog is reviewing accusations that France's Pernod Ricard colluded with retailers in New Delhi to boost market share, the latest headache for the spirits giant in a key market, legal papers seen by Reuters show. With brands such as Chivas Regal, Glenlivet and Absolut vodka, Pernod has a share of 17% in a liquor market it says is its second biggest globally by net sales, but one where it is embroiled in licence, tax and antitrust difficulties.