Police are trying to establish whether a women's serious injuries are linked to a crash in Nelson.
Police said they were called to a car crash in Jenner Rd at about 10.30pm yesterday.
Shortly afterwards they were called to Nelson Hospital, where a woman was being treated for serious injuries, they said.
They were still unsure if the two incidents were linked.
Police would like to hear from anyone in the Jenner Rd area who saw or heard anything suspicious between 9pm and midnight last night.