DAYTON, Ohio -- It was a disgusting end to a fun night of trick-or-treating for one Dayton child on Monday night. Authorities said it is hard to believe what someone put into her bag of candy.

The girl said when she dumped the candy out, she smelled something really bad.

The unusual find was unmistakably feces, probably from an animal.

The girl said she is not sure where it happened, but suspects that the culprit was a man she met while walking near East Fifth Street. She said the man said ,"Trick or treat, want some candy?" And, she said yes.

The girl said she did not see what was in the man's hand. She said he let go and she said "thank you." She said the man said "you're welcome" and she walked on down the street.

Dayton police are now investigating the incident. At first they were not sure what kind of violation they were dealing with. Sgt. Anthony Quinn said, "After reviewing the revised code, regarding tampering with food substances and things like that."

Police said the incident is a criminal case of disorderly conduct or criminal mischief. Officers are still trying to find the prankster.

Meanwhile, police said it is important to thoroughly check your child's candy before they start eating it.