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LARIMER COUNTY, Colo. — The search for two missing little girls from Larimer County grew in urgency Friday night.

We first told you about the missing girls in December.

girl
Gemmalynne Nunn-Morraine, age 4

Officials said Friday during the course of the investigation, new information has increased the urgency of the need to locate the children.

Gemalynne Nunn-Morraine, 4, and Eden Marie Noel Nunn, 6, disappeared following a custody exchange in Frederick Nov. 30, 2014.

A felony warrant is out for the girls’ mother Brittany Nunn, 5-foot-5, 150 pounds, brown hair and brown eyes. Officials described her as half Brazilian and known to dye her hair.