As reported by Geo News, Kulsoom's health deteriorated late on Thursday as she collapsed in the ICU and has not regained consciousness since then.
She has been kept on a ventilator, life-support machine, and emergency medicine.
Kulsoom's daughter Maryam Nawaz, who is soon going to contest the upcoming general assembly elections on July 25, tweeted to inform about her mother's condition.
"Ami had a sudden cardiac arrest this morning when we were on the flight and is in ICU and on the ventilator since," Maryam tweeted.
She further requested people to wish for her speedy recovery.
Geo News quoted sources as saying that Kulsoom's health was being closely monitored.
In 2017, she underwent a surgery to remove diseased lymph nodes after she was diagnosed with throat cancer. Following that, she has become weaker following multiple treatments and therapies.
(This story has not been edited by Business Standard staff and is auto-generated from a syndicated feed.)