A volunteer sports trainer was charged after police say he sent a text message of an inappropriate picture to a Maryland high school student.

Carl Joseph, 26, of Baltimore, Md. has been charged with solicitation of a minor and displaying obscene nude pictures.

Police say Joseph worked with one of the girls' basketball teams at Gwynn Park High School. He worked as a volunteer trainer and is not an employee of Prince George's County Schools.

Earlier this month, police say Joseph sent a photo of his entire body, including his genitals, to a high school student via text message. A student became aware of the photo and told a teacher.

Joseph was arrested on Monday.