India, Sept. 10 -- New Delhi

For a third time since an attack on Delhi chief minister Rekha Gupta on August 20, the Centre has revised the security arrangements, police officers said on Tuesday, adding that the security arrangements have been under review.

At present, CM Gupta has a "Z plus" security cover, with more than 55 security personnel. She was accorded "Z" security cover when she became the CM in February this year.

A senior officer aware of the developments, requesting anonymity, said: "The CM security is divided into multiple layers. The inner layer has a close protection team which moves with her all the time. The other layers have watchers, guards, CRPF commandos and other personnel. We don't have an order but we have been...