Alexander Michael Casper is being held in the Ada County Jail on a felony charge of possession of a controlled substance with intent to deliver after Meridian police say an errant text message to a junior high student about a drug deal led to an undercover bust.

Police say the 21-year-old Casper used the wrong phone number and mistakenly sent a text on Wednesday afternoon to what turned out to be a 13-year-old junior high student, offering to sell him some ecstasy. The student passed the message on to a school resource officer.

Police contacted Casper by text and by phone a short time later, setting up a meet at a local convenience store for later that night. Police eventually arrested Casper after he sold 15 capsules of ecstasy to an undercover officer just after 9:30 p.m., according to reports.

Police say the student does not know who Casper is.

Casper will make his initial court appearance Thursday afternoon.

The crime of possession of ecstasy with intent to delivery is punishable by up to 5 years in prison.