Kansas police are searching for a 5-year-old boy last seen in his Wichita home on Saturday afternoon, and are asking the public for any known information about his whereabouts.

The Wichita Eagle reports that Lucas Hernandez was last seen on Saturday at around 3 p.m. at his home off of the 600 block of south Edgemoor, near Lincoln. According the the Missing Pieces Network, a non-profit organization that assists in finding missing persons, the father’s girlfriend was taking care of Lucas and his infant sister when he vanished. She apparently took a nap at around 3 p.m., when Lucas was napping, but when she woke up, he was missing and the back door of the home was open.

Lucas’ father, who drove home after learning the boy was missing, said that all of his son’s belongings, including his shoes and jacket, were still in the home. The child’s biological mother was reportedly in the another state when he disappeared.

Lucas is described 4 feet tall and weighs around 60 pounds. He has brown hair and brown eyes, and was last seen wearing white socks, black pants, and a grey shirt with a teddy bear on the front. He also has a cleft palate and a speech impediment. His family reported that it’s not typical for the boy to wander off.

Anyone with any information is urged to contact 911 immediately.

[Feature Photo: Lucas Hernandez/Family Handout]