Sean Lannon was arrested Wednesday morning in St. Louis, the Gloucester County Prosecutor's Office confirmed.
Lannon was most recently wanted for the killing of an unidentified man earlier this week in East Greenwich Township (Gloucester County).
He was previously identified as a "person of interest in a quadruple homicide" in New Mexico, according to the Gloucester County Prosecutor's Office.
One of those victims include Lannon's ex-wife, who went missing in January. All four bodies were found on Friday in a parked car at the Albuquerque airport, news reports said.
Foul smells led police to four bodies in a parked vehicle at an Albuquerque airport on Friday, according to news reports, which identified the victims as Jennifer Lannon, 39, Matthew Miller, 21, Jesten Mata, 40, and Randal Apostalon, 60. Three of the victims were reported missing out of Grants, New Mexico, in January.
Sean and Jennifer Lannon previously lived in South Jersey and were divorced in 2019, according to public records.
Last month, police in Grants said that Jennifer Lannon and Mata were wanted for questioning in Miller’s disappearance. And on Feb. 26, police said Daniel Lemos, 45, also was wanted for questioning in the disappearances of Jennifer Lannon, Miller and Mata. Lemos was described as armed and dangerous.
Prior to his arrest, Lannon was last seen about 3 p.m. on Monday near the Walter Rand Transportation Center in Camden.
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