(Fort Worth, TX)  —  Three students at a high school in Fort Worth are under arrest for robbery.

According to the Star-Telegram, school officials say the three were taken into custody yesterday at Polytechnic High School after police had gotten a call reporting someone entering the school with a gun.  The trio had allegedly just robbed a person on Avenue J and managed to avoid security to get back on campus.  The incident prompted a lockdown at the school.  More than two dozen officers responded.  Fort Worth police says a weapon was recovered.