An Ohio substitute teacher was removed from the classroom and arrested early Thursday for allegedly having sex with at least two 11th-graders. 

Police say 23-year-old Madeline Marx is accused of having sex with one student in a store parking lot in July and another student in an apartment building parking lot in September, the Dayton Daily News reports. 

One students was 16 years old and the other 17, police say. According to court documents, Marx admitted to police that she sent one of the Fairmont High School students nude photos of herself on Snapchat and Instagram.

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