COLUMBUS, Texas -

The mystery of an oddly-dressed person who prompted a lockdown at several Colorado County schools was solved on Thursday.

Colorado County sheriff's deputies said the person was spotted on surveillance video walking into Columbus High School, 103 Cardinal Lane, about 10:45 a.m. on Wednesday.

A staff member approached him, but he didn't identify himself, investigators said.

"The person didn't respond, kept walking, so we went into lockdown and notified law enforcement," Columbus Independent School District Superintendent Robert O'Connor said.

On Thursday, school district officials said they found out it was a student prank.

O'Connor said the 16-year-old student has been detained and confessed to walking around the school in pants, a long skirt and a bonnet over his head.

The student had been suspended for a previous incident and showed up at the school without permission, officials said.

O'Connor said the student did not say why he dressed up and prompted the scare. Columbus police said the student did not have a weapon.

The student was arrested and charged with criminal trespassing. He was released into a guardian's custody.

Photos: Suspicious man at Columbus High School

Published On: Feb 06 2013 03:15:21 PM CST

A high school is placed on lockdown after a suspicious man goes inside and administrators aren't able to stop him. See surveillance images of him inside the school.

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