Krim murders: Nanny kills children of CNBC executive - report

CNBC executive Kevin Krim and his wife, Marina Krim, face a tragedy no parent should have to endure. The couple's nanny, Yoselyn Ortega, lies in a coma in a New York hospital after allegedly stabbing to death two of the Krims' young children.

The New York Times reports Marina witnessed the nanny stab herself with the same knife she used to murder Marina's oldest and youngest child. The victims, a six-year-old girl and two-year-old-boy, were found in a bathtub in the family's Manhattan apartment. Marina walked in on the scene when she returned from a swimming lesson with the Krims' three-year-old daughter.

Ortega is in a medically induced coma, so she has yet to be questioned by police, leaving the motive for her crime a mystery.

Mark Hoffman, the president of CNBC, issued a statement saying, "There are simply no words to convey the magnitude of this tragedy."

Marina and Kevin are California natives, who had relocated to New York in the past couple of years. Marina kept a blog about her children, in which she reportedly references the nanny quite fondly. Kevin is a former exec of Yahoo and Bloomberg.