Congress chief Sonia Gandhi on Tuesday night visited Safdarjung Hospital to inquire about the condition of the 23-year-old gang-rape victim and asked the government to take the strictest possible measures to ensure that there is no recurrence of such a barbaric incident that has shaken the country.

Gandhi was at the hospital here for about 15-20 minutes during which she inquired about the condition of the girl from the doctors and met her parents, according to Congress general secretary Janardan Dwivedi.

The doctors told Gandhi that the girl was in a critical state, he said.

According to doctors, the condition of the para-medical student, who was gang-raped and brutally assaulted by a group of men in a moving bus here on Sunday, had deteriorated in the evening after which she was put on "full-time ventilator support".

The Congress president has written to home minister Sushilkumar Shinde, Delhi chief minister Shiela Dikshit and National Commission for Women chairperson Mamta Sharma and told them to ensure that all possible measures should be taken so that such incidents do not occur again.