An investigation of Anne Heche’s blood results have detected “the presence of drugs” following her horror smash.

The US actress was pulled out of her burning car after she smashed into a mansion in Los Angeles while driving a terrifying 140km/h on August 5.

The 53-year-old suffered severe injuries and soon after the crash fell into a coma and has not regained consciousness since.

Almost a week after the incident, a Los Angeles Police Department Public Information Officer confirmed there was a “presence of drugs” in Anne’s blood system.

“Based on the blood draw, it revealed the presence of drugs, however additional testing is required to rule out any substances that were administered at the hospital as part of her medical treatment,” they told Fox News Digital.

“Any secondary drugs [takes] up to 30 days for [a] secondary test to come back.”

TMZ previously reported that Anne had cocaine in her system upon arrival at the hospital, but that is yet to be confirmed.

The crash is currently being investigated by the LAPD who have confirmed that if Anne is found to have been drunk she would face significant charges.

“If found intoxicated, [Heche] could be charged with misdemeanour DUI hit and run. No arrests have been made so far,” a representative said.

Anne’s representative has confirmed that she is in an “extreme critical condition”.

“She has a significant pulmonary injury requiring mechanical ventilation and burns that require surgical intervention,” her representative said.

“She is in a coma and has not regained consciousness since shortly after the accident.”

Image: Getty Images

This article first appeared on OverSixty.