CHARLESTON, S.C. (WSLS10) -New information continues to come to light about the man accused of shooting nine worshipers at a Charleston church last month.
The FBI now says the accused killer bought the gun used in the attack illegally.
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Police say he should not have been allowed to buy it, but a series of errors in the background check system failed to stop him.
Back in February, the shooter, Dylann Roof, was arrested at a shopping mall in Columbia, South Carolina.
A police report said he admitted illegally carrying a drug called sub-oxone.
Then in mid-April, he applied for a handgun at a South Carolina gun store which submitted his information to the FBI for a background check.
His criminal history rap sheet showed he was arrested in Lexington County where the sheriff's office told the FBI to contact the Columbia police.
But the FBI's databases showed no such department in Lexington County, only a different one -- the West Columbia police department which had no record of any arrest. After the three day waiting period expired Roof got his gun, because federal law allows a gun sale to go ahead if the FBI hasn't blocked it.