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MEMPHIS, Tenn. — A man police said caused Kirby High School to be placed on lockdown Thursday has been taken into custody.

Memphis Police said members of the Organized Crime Unit had been investigating a complaint a block from the school.

When they went to arrest a suspect, he ditched a backpack and ran toward the school.

“He ran in the building. School security chased him out of the building, but it was unsure if he made it back in the school, so the school went into lockdown,” explained Memphis Police Col. Marcus Worthy.

Officers went room to room, checking classrooms and hallways.

Thursday afternoon Shelby County Schools said surveillance cameras captured a student letting the suspect in through a side door.

SCS said the suspect never made it into a classroom or contacted other students.

Police announced they took Quntiel Branch into custody Tuesday after obtaining a warrant Saturday for possession of a controlled substance with intent to manufacture/deliver/sell and possession of a firearm during the commission of a felony.