During the initial investigations, a man named James W. Lewis sent a letter to Johnson & Johnson demanding $1 million to stop the cyanide-induced murders. Police were unable to link him with the crimes, as he and his wife were living in
New York City,
New York, at the time. He was convicted of
extortion, served thirteen years of a twenty-year sentence, and was released in 1995 on parole.
WCVB Channel 5 of Boston reported that court documents, released in early 2009, "show
Department of Justice investigators concluded suspect James W. Lewis, who now lives in
Cambridge,
Massachusetts, was responsible for the poisonings, despite the fact that they did not have enough evidence to charge him." Lewis continues to deny responsibility for the poisonings.
[4][5]
A second man, Roger Arnold, was investigated and cleared of the killings; however, the media attention caused him to have a
nervous breakdown, and he blamed a bar owner, Marty Sinclair, for the police investigation of him. In the summer of 1983, he shot and killed John Stanisha, whom he mistook for Sinclair, but who was, in fact, an innocent man who did not know Arnold.
[6] Arnold was convicted in January 1984 and served fifteen years of a thirty-year sentence for
second-degree murder. He died in June 2008.
Laurie Dann, who poisoned and shot victims in a May 1988 rampage in and around
Winnetka, Illinois, was briefly considered as a suspect, but no direct connection was found.
[7]
On May 19, 2011, the FBI requested DNA samples from
Ted Kaczynski, known as the "Unabomber", as part of its investigation into the killings.
[8]
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