The FBI said Friday that the man accused of killing nine African American parishioners at a historically black church in Charleston should not have been able to purchase a gun.

Officials said a background check failure allowed Dylann Roof to illegally purchase a .45-caliber Glock handgun on April 11, eight days after he turned 21, at Shooter’s Choice in West Columbia, South Carolina . Roof had previously acknowledged drug possession, according to the FBI.

Law enforcement officials had previously said the transaction was entirely legal, despite his pending drug charge

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