Police have released information on four vehicles of interest following a multi-vehicle crash near Invercargill last week.
A father and his 5-month-old daughter were killed in the crash along the Winton-Lorneville Highway (State Highway 6) on Wednesday.
Matthew Dale Harris, 22, and Ruby Jane Harris were initially reported to be critically injured following the crash, but later died from their injuries.
A teenager remains in critical condition in Dunedin Hospital, while three other people suffered non-life-threatening injuries in the crash.
The road was initially closed as emergency services investigated the crash site, around 150m north of the Makarewa Bridge. It has since reopened.