He shot up his school years ago, killing five.

Now he's on drugs and packing heat in violation of the law.

A man convicted as a 13-year-old for killing four Arkansas middle-school students and a teacher in an ambush and released from a juvenile detention center two years ago on his 21st birthday, faces new weapons charges.

Mitchell S. Johnson, 23, was indicted by a federal grand jury in October on charges of possession of a firearm while being either a user of or addicted to a controlled substance. The indictment came after his arrest earlier this year during a traffic stop in Fayetteville, Ark.

Officers found a loaded 9 mm pistol in Mr. Johnson's van and 21 grams of marijuana inside a personal bag. State prosecutors dropped the original misdemeanor arrest charges against Mr. Johnson when the U.S. Attorney's Office in Fayetteville decided to seek a federal indictment in the case.

Mr. Johnson pleaded not guilty last month to the federal charges and was released on $5,000 bond. A trial has been scheduled to begin Dec. 3 before U.S. District Judge Jimm L. Hendren in Fayetteville. If convicted, Mr. Johnson faces up to 10 years in prison — more than the seven years he served for the 1998 school killings in Jonesboro, Ark.

This guy is a stone cold killer, who set up an ambush of his school for fun. He walked away with a minimal sentence because he was a juvenile. Let's hope that the book gets thrown at Mitchell Johnson here, and that he gets to spend the full ten years behind bars. Too bad he'll be allowed to walk the streets again.