In 2009, Juliet Breitman and Jacob Kohn — who were both four years old at the time — were racing their training wheel equipped bikes down a sidewalk when they ran into 87 year old Claire Menagh. Ms Menagh was seriously injured and died three
weeks months later. [correction]
Ms Menagh’s estate sued the childrens’ parents and they named the four year old children in the suit!
The New York State Supreme Court recently ruled that the lawsuit can go forward and that small children can be found liable, though it did not judge on the case itself.
More at the NY Times: 4-Year-Old Can Be Sued, Judge Rules in Bike Case.