Updated

KATONAH, N.Y. -- A woman is accused of stabbing her nieces while baby-sitting them at their home across the street from Martha Stewart's residence in an upscale New York community.

Police say the girls were found with multiple stab wounds on the kitchen floor of their Katonah home on Saturday.

The girls have been hospitalized in serious condition. They are 7 and 9 years old.

Their aunt, Lisa Turkki of East Syracuse, was arraigned on two counts of assault and is being held at a county jail. The name of her attorney was not on record early Monday.

The Journal News says she was watching the girls while the parents attended a concert down the street.

Katonah is a hamlet of Bedford. It's about 35 miles north of midtown Manhattan.