Two of the three children of CNBC Digital senior vice president Kevin Krim and Marina Krim, a mom who maintained a blog about their family life, were apparently stabbed to death by their nanny last night in NYC.

Nanny Yoselyn Ortega (50) is accused of attacking Lulu (6) and Leo Krim (2), shown in the family photo at left; then trying to kill herself.

The details of how the mother (38) encountered her children are in the NYT story, CNN, and the tabloids. A third child was with Mrs. Krim when the attack happened at their home, and did not witness it.

From posts on the family blog [update: which is now offline] the nanny appears to have worked with the family for more than a year.

The Krim family visited Ms. Ortega's home and family in the Dominican Republic with her on a 9-day vacation this February.

The family LiveJournal contains thousands of photographs of the children, whose lives were chronicled there in loving detail by their mom. Marina Krim published an entry about her son just three hours before the attack.

Read the rest