Conjoined female twins born to a 9 October earthquake survivor from Pakistan-administered Kashmir, died on Sunday, doctors say.
Doctors said the girls could not be separated surgically
The twins were joined from chest to abdomen at the rib cage and shared a heart and liver.
Their mother, Shazia, gave birth to triplets on Saturday. A boy, born with the twins, is reported to be well.
Shazia and her husband had walked for hours from their quake-hit village to a hospital in Neelum valley on Friday.
The couple were then flown in an army helicopter to a hospital in the capital of Pakistan-administered Kashmir, Muzaffarabad, where the triplets were born on Saturday morning.
The conjoined twins were then shifted to intensive care at the Pakistan Institute of Medical Sciences (PIMS) in the national capital, Islamabad.
Doctors treating the twins said that the girls had very slim chances of survival.
"There was only one heart and chamber, which was not enough to support life for both of them... they could not have been successfully separated surgically," said Dr Nadeem Akhtar, associate professor of paediatric surgery at the PIMS told the Associated Press news agency.
One of the twins passed away on Sunday afternoon, at 4.30pm local time (1130GMT) while the other died that night at 10pm (1700GMT).
Dr Haidar Sheerazi, a neo-natologist at PIMS, told the BBC's Zulfikar Ali that the twins could not be operated as their condition did not stabilise even after they were put on ventilators.
Their condition had deteriorated to the extent that even a planned CT scan could not be conducted.
Rashid Farooq, a family friend of the couple, said the baby girls were buried in Islamabad on Monday morning.