Emergency services have this morning attended a serious crash in Riverton.

Police can now confirm one person died following the Riverton crash.

Four people were also seriously injured as a result.

The two-car crash happened just before 8:30am on Palmerston Street, between Princess and Napier Streets.

Palmerston Street has now reopened following a scene examination by officers from the Serious Crash Unit.

Motorists are asked to avoid the area if possible.

A detour is in place with eastbound traffic directed to turn right onto Napier Street, left onto Havelock Street, left onto Princess Street then back right onto State Highway 99. The reverse is applicable for westbound road users.