Portland Mayor Charlie Hales has tweeted a challenge to critics accusing the city of spending taxpayer money on pet projects.

Hales tweeted, "If you can find misspent money in my budgets, I'll show up on your doorstep with $10 and a TV reporter."

KATU reports Hales was upset after being criticized for the city's street fee plan.

The mayor's spokesman says challenges will be reviewed by the independent city attorney and budget office.