A missing 11-year-old leukemia patient who was taken by her mother from the Phoenix Children’s Hospital last Wednesday could be in danger of losing her life, according to authorities.

The patient, who goes by the name Emily, was brought to the hospital by her parents to receive treatment, according to a Phoenix Police Department press release. The girl was scheduled to be discharged the following day.

During the treatment, a chest catheter was placed into the girl’s heart, and her right arm was recently amputated due to an infection, police said.

“For unknown reasons, the mother of the 11-year-old decided to remove the IV from the catheter, changed the child’s clothing and walked her out of the hospital,” officials said in the press release.

Medical personnel informed authorities that if the catheter is not medically removed from the girl’s heart, it could potentially become infected resulting in the child’s death.

Video surveillance released by Phoenix Police captured Emily, her brother and Emily’s mother walking out of the hospital at 10:30 p.m. on November 28. The group then met up with Emily’s father outside the hospital and got into a black mini-van, police said.

A nurse supervisor called 911 when she realized Emily was missing, authorities said.

While officials say it’s not a crime for a parent to walk their child out of a hospital, it’s against the law to not provide medical aid to a child facing a life-threatening situation.

According to investigators, the missing girl’s mother is 35 years old, Hispanic and goes by the name “Norma.” Her father is 46 years old, Hispanic and goes by the name “Luis.”

Officials are searching for a black 1998 Ford mini-van the family was last seen getting into.

Police say it’s imperative that anyone with information as to the whereabouts of these individuals call the tipline at 1-800-343-TIPS (8477).