Police confirmed with the Gazette this morning that a 63-year-old Hawkesbury resident died yesterday afternoon after he pulled his car over on Hawkesbury Valley Way.
Detective Inspector Paul McHugh said police were called to the scene at around 1.30pm after a witness called to report suspicious behaviour.
"When police arrived at the scene they couldn't receive a response by the driver," Detective Inspector McHugh said.
He said the police have been in contact with the man's doctors.
"We are not treating this as suspicious," he said.
A report is currently being prepared for the coroner.