About 7.10pm on Thursday she drove into the upper level of a car park of a business on Wickham Terrace at Spring Hill.

When she got out of her car, a Mercedes-Benz C250, a man approached with a knife and demanded her keys.

She handed the man her keys and money.

The man fled in the brown sedan, which had the Queensland registration 652STR.

The woman was not hurt.

The man was described as young, Caucasian, about173cm tall with brown hair and was wearing dark-coloured clothing.