UPDATE: Bree has been located safe and well.
Mandurah Police are urgently seeking information from the public to help locate Bree Ann Newsome.
The 15-year-old is believed to be wearing black leggings and a light coloured t-shirt.
There are serious concerns held for her welfare as she is without vital medication.
Anyone with information on her whereabouts or who may see Bree is asked to contact police immediately on 131 444.
Man charged after allegedly stabbing man, pushing couple down stairs in Silver Sands
Firefighters continue to battle raging bushfire near Boddington
Waikiki P-plater charged with reckless driving along Kwinana Freeway
Police investigate Peron scrub fire
Mandurah teacher allegedly gives birth to student's baby
Australia Day in Rockingham and Mandurah
Police investigate after man stabbed in the neck in Madora Bay
Teen boy tragically killed in horror Mandurah crash
18-year-old male from Lakelands charged over incident in Pinjarra