A nanny has been arrested after two children were killed in their home in New York.
The victims' mother arrived home to find the bodies of the little boy and girl in the bathtub of their apartment on Manhattan's Upper West Side.
Their nanny was lying on the bathroom floor and had stabbed herself in the neck. Police said a bloody kitchen knife lay on the floor nearby.
The 50-year-old, who was not identified, was taken to a nearby hospital and placed under arrest.
She was listed in critical but stable condition, police said.
New York Police Department spokesman Paul Browne said the children suffered "multiple stab wounds," and were pronounced dead at the scene.
The children's mother was identified as Marina Krim, 38, and the children were two-year-old Leo and six-year-old Lulu. Their father is Kevin Krim, an executive of the broadcaster CNBC.
A CNBC spokesperson released a statement expressing their sadness for their colleague and his wife. The couple's "unimaginable loss ... is without measure", it said.
The mother had returned home with a third child and when she saw that the apartment was dark, she asked the doorman if the nanny and children had gone out.
The doorman said no, and she returned to the apartment where she made the grim discovery.
A neighbour heard the mother's screams and called 911.