[4][2][5] Before the gunmen fled the scene, they stole from the store's cash register and rigged gasoline-filled plastic jugs with detonators and set the bookstore on fire.
[2] Initially law enforcement investigated a number of possible motives for shooting, including a mafia-hit, a business dispute or a crime of passion involving a jilted ex-lover of one of the men.
[2] Authorities later turned their attention to Frazier Glenn Miller Jr., leader of the North Carolina-based White Patriot Party (WPP).
Weeks later on April 30, Miller as well as Douglas Lawrence Sheets, Robert Eugene Jackson and Anthony Wydra were arrested at a mobile home in Ozark, Missouri.
Inside the mobile home was a large cache weapons that included C-4 and dynamite explosives, automatic assault rifles and a half-ton of ammunition.
[3] On April 13, 2014, Miller killed three people in two separate shootings at Jewish centers in Overland Park, Kansas.
[9] Two of Sheets' attorneys at his 1989 trial, Les Farfour and Kirk Lyons, have stated they believe Miller was one of the perpetrators of the shooting.
[2] Farfour stated that a year after the shooting, Miller's White Patriot Party published a pamphlet claiming credit for burning an adult bookstore in Shelby.