The Panettiere family has suffered a tragic loss.
According to TMZ, Jansen passed away over the weekend in New York. Citing law enforcement source, the outlet reported that authorities were called to a home on Feb. 19 around 5:30 p.m. local time, though investigators do not suspect foul play at this time.
A cause of death has not been revealed.
Born five years after Hayden, Jansen—like his older sister—broke out into Hollywood at a young age. His earliest gigs included an appearance on a 2002 episode of Disney Channel’s Even Stevens and voice work for the Jacob Two-Two animated series.
From there, Jansen earned acting credits on Hope & Faith, Third Watch, Tiger Cruise and Everybody Hates Chris. He also continued with voiceover work, lending his talents to Blue’s Clues, Robots, Ice Age: The Meltdown and The X’s.