NEW : Death of figure skater 's father on January 24 ruled a homicide . Daniel Kerrigan , 70 , died after a `` violent argument and struggle '' with his son . Mark Kerrigan in jail on assault and battery charges , may face additional charges . Title: Why do we have to wait for the sun to rise before it can be used as an indicator?
NEW : Death of figure skater 's father on January 24 ruled a homicide . Daniel Kerrigan , 70 , died after a `` violent argument and struggle '' with his son . Mark Kerrigan in jail on assault and battery charges , may face additional charges . He is being held on $ 10,000 cash bail ; next court appearance is February 24 .