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Metro Atlanta man wanted in ex-wife's death

MARIETTA — Police are searching for a metro Atlanta man in connection with the death of his 48-year-old ex-wife.

Donna Nations Kristofak was found unresponsive in her Marietta home Saturday and later died at WellStar Kennestone Hospital.

Police have identified her ex-husband, 58-year-old John Stephen Kristofak, as a suspect. Police say Kristofak is wanted on charges of aggravated assault and murder.

John Kristofak was charged with stalking his ex-wife earlier this year after he violated a temporary restraining order.

Authorities say Kristofak called his ex-wife at work 12 times and sent her threatening emails.