The car wreck that left NFL draft prospect Michael Jefferson with significant injuries earlier this month appeared to be caused by an under the influence driver ... this according to the crash report obtained by TMZ Sports.
In the docs, authorities say Charles Dunn, the 55-year-old man who died after slamming head-on into Jefferson's Chevrolet Impala on April 9 in Mobile County, AL, was suspected of having both alcohol and drugs in his system at the time of the accident.
It's unclear why officials believe that .