Lannon, originally from Gloucester County but had moved to New Mexico, was wanted in New Jersey for allegedly killing 66-year-old Michael Dabkowski inside the victim's home in East Greenwich, Gloucester County on Monday. Gloucester County investigators told the New York Post that the alleged crime was "not a random act," and NJ.com reported Dabkowski had been bludgeoned to death. Lannon reportedly was asleep in a car he had stolen form Dabkoski when he was arrested, according to NJ.com. In New Mexico, he was wanted for the alleged homicide of four people, including Lannon's ex-wife, 39-year-old Jennifer Lannon, who previously lived in South Jersey; 21-year-old Matthew Miller; 40-year-old Jesten Mata; and 60-year-old Randal Apostalon. All four people were residents of Grants, New Mexico. Jennifer Lannon, Miller and Mata had been reported missing since January by Grants police.