Police say he admitted to smoking marijuana roughly an hour before the crash and told police his impairment level was a 1 or 2 out of 10 at the time of the crash.
An "active investigation" in a San Marcos neighborhood is causing delays for school bus routes, the San Marcos Police Department said on social media Friday.
A portion of I-10 was shut down throughout the entire Thursday morning commute while investigators looked at multiple scenes connected to a homicide in Tempe Thursday.