BOSTON (AP) Olympic skater Nancy Kerrigan said Thursday that she and her family plan to help her brother fight a state medical examiner's finding that her father's death last month, following a fight, was a homicide.

Daniel Kerrigan, 70, died Jan. 24 after what authorities said was a struggle with his son, Mark, 45, who was charged with assault.

In a letter released Thursday, Nancy Kerrigan thanked friends and fans for their support and says the weeks since her father's death have been "a sad moment for us all."

"And it isn't over yet, particularly with the ruling this week about the cause of my dad's death; a ruling, by the way, which we think was unjustified and which we plan to help my brother fight," Kerrigan wrote in the letter.

Kerrigan released the letter the day before she is scheduled to begin work as a commentator on the Winter Olympics for "Entertainment Tonight" and "The Insider," as she did during the 2006 games.