"We don't know enough about it...Let's wait and see what exactly has happened and why it happened," External Affairs Minister Salman Khurshid said while terming the incident extremely sad.
Official sources said the Indian mission in London has been asked to give a detailed report on the entire incident and the ministry was awaiting a response.
Asked if she will be buried in India, sources said her husband was yet to approach the mission in this matter.
46-year-old Jacintha Saldanha, a mother of two, was found unconscious last Friday in the quarters of the King Edward VII Hospital in central London where she was working as a senior nurse. She was pronounced dead when rushed to the hospital.
Jacintha had answered the hoax call at 5.30am on December 5 morning, and was helping out on the reception at the time of the prank call. Giggling DJs Mel Greig and Michael Christian were pretending to be the British Queen and Prince Charles and asked her if they could be put through to Kate.
Then she connected them to another nurse who gave out details of the condition of 30-year-old Kate who was suffering from acute morning sickness at the London hospital.
The exact cause of the death remained unclear.