ST. LOUIS, Mo. (KMOX) – The man suspected of shooting an administrator and himself at Stevens Institute for Business and Arts Tuesday has been charged.

34-year-old Sean Johnson is charged with first degree assault, being a felon in possession of a firearm, possessing a defaced firearm and armed criminal action.

(Read full report from Circuit Attorney’s Office)

Police say the 9mm pistol Johnson used in the shooting, had the serial number scratched out.

Investigators say Johnson had a heated discussion over financial aid with the school’s financial aid director Greg Elsenrath on Monday. He returned Tuesday and after discussing the issue again, walked out of Elsenrath’s office, then came back and shot Elsenrath once in the chest.

Johnson was found a short time later in a stairwell with a gunshot wound to his side. His gun had three more rounds inside.

Both Johnson and Elsenrath are in critical but stable condition.

The St. Louis Metropolitan Police Department released the handgun that Johnson used in the shooting. (pictured right)

It is a Kel-Tec PF9, 9 mm, seven shot semi-automatic handgun.

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