The actress Anne Heche, who had been in a coma since a car crash last week

has been declared brain-dead and is being kept alive on life-support to see if her organs are viable for donation, one of her representatives said Friday.

Ms. Heche, 53, was critically injured on Aug. 5 when she crashed the Mini Cooper she was driving into a home in the Mar Vista neighborhood of Los Angeles

the authorities said. She suffered a severe anoxic brain injury and was being treated at the Grossman Burn Center at West Hills Hospital

according to a statement released on behalf of her family and friends Thursday night.

It has long been her choice to donate her organs and she is being kept on life support to determine if any are viable,” the statement said

The declaration of brain death had come Thursday night, the representative later confirmed.

The crash started a fire that took 59 firefighters more than an hour to extinguish, the Los Angeles Fire Department said.

He said a second test was needed to rule out any substances administered by hospital staff but those results could take “weeks.”