TOPEKA, Kan. (AP) — The Kansas Turnpike Authority is warning the public to stay out of a south Topeka creek following a sewage spill that resulted from turnpike construction.

Turnpike Authority official Rachel Bell tells the Topeka Capital-Journal that the spill at Shunga Creek was discovered Wednesday morning.

Bell says the contamination occurred as subcontractor RD Johnson was preparing to relocate a sewage line on the south Topeka interchange project. The connection became displaced and the sewage was spilled near the project. Officials aren’t sure how much sewage was spilled.

City spokeswoman Aly Van Dyke says the city was notified when it responded to an odor complaint Wednesday.

The Turnpike Authority says it will notify the public about testing results.

Work on the interchange project includes toll plaza and bridge improvements, a realigned northbound exit ramp and improved drainage.