A South Jersey native, accused of killing his ex-wife and three other people in New Mexico, allegedly lured two victims to their deaths and dismembered their bodies, a court record says. Sean Lannon, who’s also charged with a murder in Gloucester County, was planning to kill a sixth victim when a manhunt ended with his arrest in Missouri on March 10, says an affidavit for his arrest on murder and other charges in New Mexico. Lannon, 47, allegedly began a killing spree Jan. 17 by shooting his former spouse, 39-year-old Jennifer Lannon, in the bedroom of their home in Grants, New Mexico, according to a nine-page affidavit giving reasons for his arrest.