Mumbai, Feb. 27 -- In the face of severe criticism over Wednesday's four-hour-long trading halt, the National Stock Exchange said on Friday that it 'sincerely regrets the incident.

At a time when questions are being raised as to why the disaster recovery site did not come to the rescue during the incident, the NSE said that it took the decision of not migrating to the recovery platform after detailed consultation and evaluation.

Capital market regulator SEBI, which has sought a detailed root cause analysis from the exchange, has also asked the NSE to explain the reason for not migrating to the recovery site.

In a statement on Friday, the exchange stressed on its commitment towards providing a robust, stable and reliable platform and ou...