Authorities said a missing Tacoma woman's vehicle was found fully engulfed in flames Wednesday, just days after she reportedly went missing under "suspicious circumstances."

The Tacoma Police Department said Diana Davis, 50, has been missing since July 27.

Officers found a silver Chevy Impala July 29 registered to Davis fully engulfed in flames in the 1600 block of Court ?E? in downtown Tacoma.

Investigators said Davis is about 5-feet-5, weighing 105 pounds, with black hair and brown eyes. The 50-year-old lives in the Auburn area, police said.

Anyone with information on Davis? whereabouts, including any suspicious persons or activity in the area where her burned vehicle was found, are asked to call 1-800-222-TIPS.