CYPRESS, Texas -

A newborn was hospitalized Wednesday after someone discarded her on a curb outside an apartment complex in northwest Harris County.

The Harris County Sheriff's Office said they responded to a 911 call made at 7 p.m. Tuesday from the Stonegate Villas Apartments, located on Grant Road near Jones Road.

Officials said a resident of the complex was walking her dogs when she discovered the newborn female wrapped inside a plastic grocery bag near a fence. The pets picked up on a scent coming from the bag.

Cy Creek Fire and Rescue responded to scene and said the infant was in good condition and breathing on her own. The child still had about 3 inches of her umbilical cord attached, said officials.

"The infant is alive, appears in good health," said Sgt. Gordon Trott of the Harris County Sheriff's Office. "Somebody had already cleaned up the child before placing the child on the curb."

Investigators said they are perplexed because Texas law allows anyone to drop off a newborn at a hospital or fire station with no questions asked and no legal ramifications. As they look for the mother, they are hailing the woman who found the child as a hero.

"If it had not of been for the resident that came out to walk her dogs, that child may have laid there all night, possibly would've died," said Trott.

The infant was transported to Texas Children's Hospital for observation and medical evaluation.

The Harris County Sheriff's Office Crimes Against Children Unit said it will take over the investigation. Anyone with information is asked to call the unit at 713-830-3250 or Crime Stoppers at 713-222-TIPS (8477).