URGENT: Pregnant mom and two small children missing in Colorado

A pregnant mother and her two young daughters have mysteriously gone missing in Frederick, Colorado.

Fox 31 Denver reports that Shannan Watts, 34, and her daughters were reported missing from Frederick on Monday. Watts is reportedly 15 weeks pregnant, and her daughters are 3 and 4 years old.

Little is known about the circumstances of the disappearance, and the Frederick Police Department told Fox 31 Denver that there is no vehicle associated with the missing mother and children.

Police have not said whether foul play is suspected, and have reportedly organized the majority of the police force to search for Watts and her daughters.

Anyone with information is urged to call Frederick Police at 303-652-4222 or contact authorities via email.