A man has died after his vehicle lost control and rolled in Mornington last week.

Police believe the vehicle, which was travelling south on Nepean Hwy, lost control near Webber St and struck two light poles before it rolled.

The male driver, believed aged in his 20s, was ejected from the vehicle and sadly died at the scene.

Nepean Hwy was closed between Strachans and Bentons Rds, both north and south bound, while police processed and rehabilitated the scene.

Police are investigating whether speed was a factor in the crash.

A report will also be prepared for consideration of the Coroner.