(CNN) -- Authorities in Maine continued to search Monday for 20-month-old Ayla Reynolds and asked the public for help in finding the missing girl.
Ayla was last reported seen Friday night by her father when she was put down for bed, Waterville Police Chief Joseph Massey told reporters.
"The focus obviously is to bring Ayla home. Everybody is hoping for that and we are working to that end," he said. "I'm urging the public to continue to call in."
Police on Monday conducted an expanded search in the area around where Ayla disappeared and will follow up on whatever leads they get, said Massey.
"We are approaching this with every possible thought and angle in mind. It is currently a very open case," the police chief said.
Ayla is described as having blond hair, being approximately 2 feet, 9 inches tall and weighing 30 pounds. She was last seen wearing green pajamas with white polka dots and the words "Daddy's Princess" across the front.
When she disappeared, the girl had her arm in a soft cast that was wrapped in a bandage, said Massey.
Ayla's family is cooperating and police do not have anyone connected to the case in custody, he added.
Monday night, the girl's mother told HLN's Nancy Grace that she sought full custody of Ayla recently.
"I decided that it was time to do this the legal way, and let a judge say who this child should be with. And my daughter does deserve to be with me. I'm the one who's raised her for 18 months," said Trista Reynolds.