Police have called Brian Laundrie, 23, a "person of interest" in the case, which has captivated Americans since Petito's family reported her missing on Sept. 11. Ten days earlier Laundrie had returned home to North Port, Florida, without her from a cross-country road trip
The mass shooting happened during the early hours at a billiards hall on a commercial estate near Miami Gardens, to the northwest of the coastal city's downtown.