Following the Eastern Freeway fatal collision where four police officers were killed on April 22, Detectives from Taskforce Paragon have charged a 49-year old Frankston man.

The man was arrested in Lyndhurst at about 9.20am on Saturday (Aug. 1).

He has been charged with four counts of manslaughter and was expected to appear before an out of sessions hearing on Saturday night.

The arrest follows an extensive 3-month investigation led by Road Policing Operations and Investigation Division with the assistance of specialist investigators from across Victoria Police.