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NYC nanny pleads not guilty in child deaths

Two-year-old Leo Krim (left) and 6-year-old Lucia Krim (right) are seen in this split image. The two were allegedly fatally stabbed by their nanny, Yoselyn Ortega, on Oct. 25. Ortega was formally charged in their murders on Saturday, Nov. 3, 2012.

November 28, 2012 12:00:00 AM PST
A nanny charged with stabbing two children to death in an upscale Manhattan home has pleaded not guilty.

Yoselyn Ortega entered her plea through her attorney while handcuffed to her hospital bed. She's being treated for self-inflicted stab wounds. The 50-year-old appeared alert but didn't speak during the Wednesday hearing.

Ortega is being held without bail while she undergoes a psychiatric exam.

Last month, Marina Krim returned to her home to discover her 6-year-old daughter and 2-year-old son dead of knife wounds in the bathtub. Ortega was found lying on the bathroom floor with stab wounds to her neck. A kitchen knife was nearby.

Both parents are originally from Southern California. Marina Krim grew up in Manhattan Beach and her husband Kevin is from Thousand Oaks. Kevin Krim, a CNBC digital media executive, was away on a business trip when the killings occurred.

The Associated Press contributed to this report.