Did the Clinton campaign bus dump human waste in Georgia? Police are investigating.

Photos of a Hillary Clinton campaign bus allegedly dumping human waste into a storm drain have prompted police in Lawrenceville, Georgia, to launch an investigation. The incident reportedly occurred Tuesday morning on Georgia's Grayson Highway, while the "Forward Together" bus was between campaign stops.

.@CityofLville cops investigating claims that #Hillary #ForwardTogether bus dumped human waste into storm drain. Follow @cbs46 for updates. pic.twitter.com/xyBnfaMy7n

— Rebekka Schramm (@SchrammCBS46) October 18, 2016

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In photos snapped by a local businessman, liquid can be seen "seeping out from underneath the Clinton bus," The Hill reported. When police arrived on the scene, they reportedly found "toilet paper scattered everywhere and a foul smell." An employee at an auto parts shop along the highway also reported seeing a bus dumping sewage.

In a statement, the Democratic National Committee apologized for what it called "an honest mistake." "We were unaware of any possible violations and have already taken corrective action with the charter bus company to prevent this from happening again," the DNC said in a statement to CBS46. "Furthermore, the DNC will work with the Georgia Department of Natural Resources, as well as local and state officials to determine the best course of corrective action."

The mess has since been cleaned up by hazmat units. Both the State Environment Protection Department and Gwinnett County Storm Water are involved in the investigation.