Sean Michael Lannon, suspect in 5 killings, captured by police in Missouri Updated Mar 10, 2021; Posted Mar 10, 2021 Sean M. Lannon, 47, of Grants, New Mexico, is a suspect in five deaths, including one in New Jersey.(Gloucester County Prosecutor's Office) Facebook Share UPDATE: A man sought in connection with a homicide in New Jersey and the deaths of his ex-wife and three other people in New Mexico has been apprehended in Missouri, authorities said. Lannon is the suspect in a Monday killing in East Greenwich Township in South Jersey that claimed the life of a man whose identity has not been released by investigators.