Law enforcement officials searched Tuesday for a 19-year-old Arizona woman and her infant son who were reportedly kidnapped by two men outside their home early Monday morning.

The Maricopa County Sheriff's Office issued an Amber Alert Monday for Noemi Ramirez and 1-year-old Isidro Ramirez. Isidro has black hair, brown eyes and weighs approximately 40 pounds. He was last seen wearing a white T-shirt and a diaper.

The woman's roommate witnessed the abduction, a representative for Maricopa County Sheriff's Office told FOXNews. Police say the roommate saw Ramirez and her son being forced into a car, and that she thought it seemed suspicious.

Click Here to See the Amber Alert

The woman, her son, and the two men may be traveling in a blue 1990 Chevrolet truck with Arizona license plates 709 SCM, according to the Amber Alert Web site. The truck has an extended cab.

Police told FOXNews the truck belongs to the missing woman, and they are investigating whether there may be a domestic connection between her and the alleged abductor(s).

One of the men was described as Hispanic, about 6-foot, 22 to 24 years old, with a muscular build. He was described as wearing light brown pants, a T-shirt and black tennis shoes. The other man's description was unknown.

Authorities are asking anyone with information about the abduction to call (602) 876-1011.

The Associated Press contributed to this report.