Mark Kerrigan pleaded not guilty in the death of 70-year-old Daniel Kerrigan, his father. The 45-year-old Mark Kerrigan , is the brother of figure skater Nancy Kerrigan.
Kerrigan was arraigned in Woburn,Mass. where he entered not guilty pleas to manslaughter and assault. He posted $25,000 bail.
Officials said the younger Kerrigan had grabbed and shoved his father. They said Kerrigan grabbed his father around the neck, fracturing his larynx and causing him to fall to the floor on his back, unconscious. A state medical examiner said the cause of death was "cardiac dysrhythmia" a loss or interruption of a normal heartbeat that can lead to cardiac arrest after an altercation with neck compression that damaged his windpipe.