A 25-year-old Blenheim man remains in serious condition and police are trying to piece together what happened after an accident July 30.
Police say the crash occurred about 4 a.m. on Victoria Road near Reeders Line just outside of Ridgetown.
The driver lost control of his vehicle and hit a tree, police say, and the vehicle came to rest in a ditch.
The driver was taken to hospital in Chatham before being transferred to London Health Sciences Centre with life-threatening injuries.
The traffic unit of the Chatham-Kent Police Service continues to investigate. Anyone with information is asked to contact Const. Jason Herder at 519-355-1092.