Anchorage -

Anchorage police need help finding a 46-year-old woman and her 4-year-old granddaughter missing in Midtown Saturday morning.

According to a statement from APD spokesperson Dani Myren, Rhonda Johnson and granddaughter Aliyah Kovach were last seen at about 7:15 a.m. at their residence near the 1600 block of Hardwood Court, near the Seward Highway's Dowling Road exit.

Johnson frequently wanders in the nearby area, and it is believed she and her granddaughter left the residence on foot sometime before 7:45 a.m.

Myren says that police teams began a search after they received an initial report of what happened from the pair's relatives.

"It sounds like the family went out and searched for a while, then called police at about 8:20 (a.m.)," Myren said. "It's reported to us that (Johnson) has early-onset Alzheimer's."

Police have searched the neighborhood and surrounding area, but have not seen the pair.  Police say Johnson is considered a vulnerable adult and may have become disoriented in her surroundings.

She is described as a white woman with graying brown hair and brown eyes.  Johnson was last seen wearing a multicolored “Dead Pool” graphic t-shirt and black spandex pants.

Kovach is a 4-year-old female with dark curly hair. She was last seen wearing a gray hoodie, jeans, and bright green tennis shoes.

Anyone who sees or has information as to the whereabouts of Rhonda Johnson and her granddaughter are asked to call APD Dispatch at 786-8900.

Channel 2's Chris Klint contributed information to this story.