Debbie Reynolds died of burst blood vessel in brain during stroke

The Los Angeles County Department of Public Health issued the death certificate in the name of Carrie Frances Fisher.

Her mother Debbie Reynolds died the following day at another Los Angeles hospital, after having her own medical emergency while making memorial plans for her daughter.

"Star Wars" icon Fisher died at 8:55 a.m. on December 27 at Ronald Reagan UCLA Medical Center, age 60, with her immediate cause of death listed as "Cardiac arrest/deferred". Hypertension is also listed an an underlying cause.

Fisher's death certificate, obtained Monday, lists the cause of death as "cardiac arrest/deferred". Fisher's certificate said the manner of death is still "pending investigation".

This suggests that the coroner's office is planning to carry out more tests to find out the cause of the heart attack, which the Star Wars actress suffered on board a flight from London to LA.

The legendary actress died December 28 at the age of 84 at Cedars-Sinai Medical Center in Los Angeles, just a day after daughter Carrie Fisher died.

A public memorial is to be held later in the year.

The iconic actress, who was 60, was transported from the airport to the UCLA medical centre, but never regained consciousness.

Under "cause of death" it says "intracerebral hemorrhage", a type of stroke caused by bleeding in the brain rather than the more common type caused by a clot.