An undercover FBI agent, Kevin P.
Operation Black Biscuit was ended prematurely because the ATF believed Robert "Chico" Mora, a senior member of the Hells Angels' Phoenix chapter, was plotting to murder the Solo Angeles.
The attackers belong to the notorious "Brigade 81".
At the beginning of 1997, Hells Angels member Kim Thrysöe Svendsen was murdered in Aalborg.
Rival motorcycle gangs include the , the , the , the , the , the and the.
HAMC members reportedly blocked police from entering the motel where the incident took place until after evidence had been removed.
The ATF discovered that the bomber used dynamite with a four-inch fuse.