An 18-year-old girl who fell into a 540-foot-deep borewell and was rescued after more than 33 hours in Gujarat's Kutch district was declared dead at a hospital on Tuesday, officials said.

The girl fell into the borewell at Kanderai village in Bhuj taluka around 6.30 am on Monday and was stuck at a depth of 490 feet, prompting the administration to launch a multi-agency rescue operation.