Nationally Infamous Female Murderer Marjorie Diehl-Armstrong Dies In Federal Prison

Attorney Ambrose represented Marjorie Diehl-Armstrong in her first trial for the murder of her boyfriend in 1984. This would be the first of at least three murders she had committed - one of which was the infamous "Pizza Bomber Murder" where she strapped a home-made bomb to a pizza delivery man and forced him to rob a bank. The bomb subsequently detonated when the police arrived on the scene.

Marjorie Diehl-Armstrong "suffered from mental illness, as did Robert Thomas, the boyfriend Diehl-Armstrong shot to death in 1984. Her bipolar disorder became an issue in that case as her prosecution was delayed for years until she was found mentally competent to stand trial.

Her lawyer in the Thomas case, Leonard Ambrose, said the Erie County District Attorney’s Office never should have prosecuted her in the Thomas case, but should have agreed to have her institutionalized for the rest of her life because she was a danger to society.

“She happened to be smart, which made her even more dangerous and manipulative and devious,” Ambrose said Tuesday. “She should not have been tried in the first instance.”

Once Diehl-Armstrong was acquitted of killing Thomas, Ambrose said, 'it was only a matter of time before she did the same thing again.'"

For more information click this link. It is an article by Ed Palattella from GoErie.com from which we quoted.


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