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Search on for missing Mo. mom last seen at pizzeria

CHESTERFIELD, Mo. -- Investigators and family are searching for a Missouri mother last seen nearly a week ago at a Chesterfield pizzeria.

Tricia Haney Langston was last seen Sept. 23 at the Haus Pizzeria and Bar in the Chesterfield / Ballwin area, west of St. Louis, reports CBS affiliate KSDK.

Langston's sister Karen Roof told the station that credit card statements showed the missing woman used her card a few hours later at a nearby gas station, but no one has heard from her since.

Roof told the station Langston has a son, and that she communicates with her ex-husband daily about the boy. Roof said her sister has a good relationship with her former husband and that it's unusual for her to be out of touch with family for so long.

Investigators with the Ballwin Police Department are questioning multiple people as friends and family hand out fliers to businesses near where she disappeared, reports the station.

Langston is five feet, seven inches tall, weighs 115 pounds and has long blond hair. She drives a 2003 silver Toyota 4Runner with a license plate of DB7 Y2C.

Anyone with information about Langston's whereabouts is asked to call 636-227-9636.