Police are appealing for the public's assistance in locating 14-year-old Aria who has been reported as missing.

Aria, also known as Angel, went missing from Warkworth on June 20.

"Police are continuing to conduct enquiries into her disappearance, and believe Aria may be associating with people known to her in South Auckland, Auckland CBD, or Rotorua," says a post on the Bay of Plenty and Taupo Police Facebook page.

"Given her age and vulnerability, Police have concerns for her wellbeing and ask anyone who sights her to contact Police as soon as possible on 111."

Additionally, anyone who has further information on her whereabouts can contact Police on 105, quoting file number 230620/2910.

Information can also be provided anonymously via Crime Stoppers on 0800 555 111.