Los Angeles, California - Anne Heche is "not expected to survive" a severe car crash that left her in a coma, her family has said.

This grim news comes a week after the actor crashed her car into a house in Los Angeles. The fiery crash left Heche in critical condition and destroyed the house.

In a statement on the behalf of Heche's family, a rep told People Magazine.

"Unfortunately, due to her accident, Anne suffered a severe anoxic brain injury and remains in a coma, in critical condition. She is not expected to survive."

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According to the statement, preparations are now being made for organ donation. "It has long been her choice to donate her organs and she's being kept on life support to determine if any are viable," the statement said.

On behalf of the family, the rep thanked everyone for the "kind wishes and prayers" and staff at the Grossman Burn Center at West Hills Hospital for their tireless efforts.

In the six days since the star's horrific accident, Heche's social media accounts have been flooded with get-well wishes and prayers from fans and followers alike.

Last week, the 53-year-old was driving her Mini Cooper in Los Angeles when she drove off the road and crashed into a wall of a house. Her car then burst into flames. Fifty-nine firefighters responded to the scene of the accident.

Preliminary investigations by the LAPD revealed the "presence of narcotics" in Heche's bloodstream, according to a Deadline report.

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The Emmy-winner is best known for her work on movies like Donnie Brasco, Cedar Rapids and the 1998 Psycho remake.

"Anne had a huge heart and touched everyone she met with her generous spirit," the rep said of the actor's legacy.

Heche considered it her life's work to "spread kindness and joy [...] She will be remembered for her courageous honesty and greatly missed for her light."