I-S-U spokesman Jay Groves today said the timing of the expulsion was "coincidental."
Groves says the university decided to expel Rithichai Yibcharoenporn before the gun inquiry but hadn't yet completed the necessary steps to remove him. He says the grad student had a long history of confrontations with faculty and wasn't making academic progress.
But the university acted swiftly after the 31-year-old asked a professor about his constitutional rights to buy a gun during a required writing exam on April 19th.
He was expelled four days later and is now in the custody of U-S immigration officials awaiting his return to Thailand.
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