KEY POINTS:
Police say they have "serious concerns" for the safety of 17-year-old girl who has been missing from Mangere since last Saturday.
Livoni Verna Tupou has a mental age of 8 and her bank account and mobile phone have not been used since she disappeared.
She is described as a Pacific Islander, 167cm tall, with shoulder-length, light-brown hair.
Anybody with information should contact the Counties Manukau crime squad on 027-497-4912 or 09-261-1327.
