father's death, Nancy Kerrigan said outside the courthouse. My dad would never have wanted any of this. Prosecutors say Daniel Kerrigan, 70, died after having an argument and physical confrontation with his intoxicated son. A medical examiner had found that Daniel Kerrigan's 2010 death came from cardiac dysrhythmia triggered by the brawl, which resulted in a larynx injury. Cardiac dysrhythmia is abnormal electrical activity in the heart. Kerrigan's family has said Daniel Kerrigan had a heart condition.