L.A. Times update:
Hastings had arrived in Los Angeles from New York the day before the accident, with his brother scheduled to arrive later the day of the crash "as his family was attempting to get [Hastings] to go to detox," the report stated.
Hastings was believed sober for 14 years, but had recently begun using drugs again in the past month or so, according to the coroner's office, based on interviews with family members.
A medical marijuana card was found in Hastings wallet and had been prescribed for treatment of post-traumatic stress resulting from his time as a war journalist in Iraq and Afghanistan.
Hours before the crash, Hastings had last been seen by one witness "passed out" sometime between 12:30 a.m. and 1 a.m. The crash occurred just before 5 a.m.