Child Protective Services had a court order to remove the baby, but staff could not find the mother or infant, police said in a news release.
Detectives with the Fairfax County Police Department have obtained a parental abduction warrant for a 30-year-old Falls Church woman for allegedly fleeing with a child who was ordered to be removed from a local home.
According to an Amber Alert, the missing baby girl, Liz Khatun, weighs 9 pounds, with brown hair and brown eyes.
Six-week-old Liz Khatun was likely abducted by 31-year-old Flora Khatun, according to state police.
Officials believe she is in extreme danger.
The two may be traveling in a blue 2011 Sienna Toyota with Virginia tag XJG-1035. She was seen wearing a black T-shirt and black yoga trousers.
Anyone with any information on their whereabouts should contact the Fairfax County Police Department at 703-246-7800 or the Virginia State Police at 1-800-822-4453.