Washington, March 30: Tapes of the 911 call made while Natasha Richardson was being shifted to a hospital have been released.

The Oscar-winner had met with an accident and suffered a head injury during a private ski lesson at Mont Tremblant resort on March 16.

 The 45-year-old had initially showed no signs of injury but later complained of headaches, and was admitted to the Hospitalier Laurentien.

 She was shifted to intensive care before being jetted to a New York hospital where she passed away in the presence of her mother Vanessa Redgrave and husband Liam Neeson on March 18.

According to the transcripts obtained by Toronto's The Globe and Mail, the star showed normal signs during the ambulance ride but had no idea where she was, what day it was or what had happened to her.

Medics had arrived at 1 p.m. but were turned away after the actress declined medical help.

But after she complained of severe headaches two hours later, the resort called 911.

"I'm arriving with a female in her 40s...[she's] disoriented...It's following...a ski fall that happened at noon. Soon afterward she presents signs of confusion, a concussion," E!Online quoted a medic as radioing to the local hospital.

By 6:38 p.m., Richardson had been transferred to the Montreal's Sacré-Coeur, but by then her "pupils were unresponsive, a sign of advanced brain damage."

It was further added that, "Some have said a medical helicopter, which can make the trip from Mont Tremblant to Sacré-Coeur in less than 30 minutes, might have saved Ms. Richardson."

Richardson died after suffering a blood clot on the brain as a result from her fall. (ANI)