CARMEL, Ind. (AP): Police in a northern Indianapolis suburb say they're investigating sexting by high school students.

Carmel Police Department Lt. Joe Bickel says in an email sent Monday that police had contacted Carmel Clay school district about “inappropriate digital images on electronic devices” and were conducting an investigation in partnership with school officials.

Sexting is the practice of teens sending nude or sexually explicit photos or videos of fellow minors by cellphone.

The Indianapolis Star reports that officials at Avon High School seized more than a dozen cellphones from students they said were sharing nude images of their classmates in December.

Indiana law concerning sexting bears a complicated relationship with statutes outlawing child pornography due to the ages of both victims and those sending images.