Clifford is currently serving a prison sentence for historical sex offences.
Former celebrity publicist Max Clifford is being treated in a 'critical care unit' in hospital after suffering a heart attack, his daughter has confirmed.
Clifford, serving an eight-year sentence for the indecent assault of four girls and women between the ages of 14 and 19, collapsed twice in the space of days at Littlehey Prison on Cambridgeshire.
"It was just too much," his daughter Louise told
The Mail on Sunday.
"Next day he collapsed again and was unconscious for several minutes - though he doesn't know how long.
"He was seen by a nurse, who insisted he must be transferred to a local hospital.
"That's where he had his cardiac arrest, later on Friday. He is now in the critical care unit. He's in a bad way."
A Prison Service spokesperson added: "The safety and welfare of people in our custody is our top priority and we take our duty of care extremely seriously.
"All prisoners have access to a GP and the same level of NHS services as those in the community. A doctor's advice is always sought when deciding how best to meet individual healthcare needs while ensuring the public is protected."
