Middleton And Prince William
Queen Elizabeth recently decreed that if Prince William and wife Kate's first child is a girl, she will be granted the title of "princess." Reuters

King Edward VII's hospital in London, the facility currently treating Kate Middleton, confirmed to the Associated Press Wednesday that it received a crank call during which information on her condition was given out to a woman impersonating Queen Elizabeth II.

The hospital where a pregnant Kate Middleton is being held acknowledged that an Australian radio station made a hoax call to the hospital in the early hours Tuesday -- and the hospital fell for it.

According to the AP report, a woman with a voice sounding like that of Queen Elizabeth II asked about the duchess' health before being told that Kate "hasn't had any retching with me and she's been sleeping on and off.

"She's sleeping at the moment, and she has had an uneventful night. She's been given some fluids. She's stable at the moment," the nurse reportedly said.

"I would suggest that any time after 9 o'clock will be suitable to visit. We'll be getting her freshened up,” she added.

The hospital said the call had been transferred to a ward and the conversation was held with one of its nursing staff. Its telephone protocols are being reviewed, the hospital said in a statement obtained by Fox News.

Middleton is spending her third day in the hospital while being treated for acute morning sickness.

Prince William visited his wife at the hospital for several hours on Tuesday, while media from around the world camped outside, seeking news on the royal pregnancy. Officials from St. James' Palace have said the duchess was not yet 12 weeks pregnant.