MILWAUKEE (WITI) -- Milwaukee police have confirmed with FOX6 News they are investigating a case involving a missing 22-year-old woman.
According to Milwaukee police, Karen Bias was reported missing on December 13th.
FOX6 News spoke with the woman's sister, who says the family is concerned about Bias because she has spina bifida, is confined to a wheelchair and has trouble getting around by herself.
According to the woman's sister, the woman was last seen on Thursday, December 12th at a home at 1511 W. Burleigh.
The woman was last seen wearing a black jacket, blue jeans and black boots.
Bias is said to be 4'5" tall and weighs 79 pounds.
FOX6 News spoke with Bias' father, Kevin Arnett. Just last month, Arnett met Bias, his daughter, for the very first time.
"She wanted to come and spend the holidays with us. She wanted to come meet my other daughters and get closer to me," Arnett said.
Arnett discovered his long-lost daughter online about two years ago, after he joined Facebook to take part in a FOX6 contest.
Arnett knew only his daughter's name, and searched for it -- finding Karen's Facebook page. He sent her a message, and Karen was thrilled.
"It was shocking. I was like, after 19 years of my life, that's amazing that I finally know who my daddy is," Bias told FOX6 News at the time.
The two started talking over the phone -- and then five weeks ago, Bias came to Milwaukee.
Family members say Bias planned to stay through Christmas, but on Thursday, December 12th, she disappeared from her half-sister's house.
"My daughter came home from work and she was missing," Arnett said.
Bias' family says her spina bifida requires medical care, and worries she could go into kidney failure.
"The concern is her not having the catheter -- things can build up in her bladder," Arnett said.
Family members say they do not believe she has any friends in the city outside of her family members -- and would have trouble getting around in her wheelchair.
"With the snow we have out here, it's almost impossible for her to go up and down the street," Bias' sister, Marquita Arnett said.
"I'm just at a loss for words. I don't know where she's at," Kevin Arnett said.
Anyone with information in this case is asked to contact Milwaukee police.