John Lindenman, 43, and Bradley Lutzo, 45, suffered fatal gunshot wounds during an 11 p.m. brawl in a QuikTrip parking lot on Tuesday.

Brawl involving rival motorcycle groups led to a shooting that left two men dead at a Sunnyslope convenience store, according to police who released the victims' names Thursday. Investigators described the unidentified groups as gangs, although others suggested they were unlike outlaw groups commonly tied to biker violence.
Some police described the groups as substance-free organizations purportedly geared toward recovering addicts looking to ride with other sober motorcycle enthusiasts. John Lindenman, 43, and Bradley Lutzo, 45, suffered fatal gunshot wounds during an 11 p.m. brawl in a QuikTrip parking lot on Tuesday. No arrests have been made, and the deaths are under investigation, according to police.
Neither Lindenman or Lutzo had criminal records in Arizona.Phoenix Detective Cindy Scott said the department will not release the names of the groups, citing its policy on withholding the identifications of documented criminal street gangs.