PHILADELPHIA — A 5-year-old autistic girl who disappeared from a Philadelphia-area home during the height of Tuesday’s storm was found dead Wednesday and was believed to have been swept away by floodwaters in the creek behind her house, authorities said.

Police in Montgomery County’s Towamencin Township said Eliza Talal, who is nonverbal, was found in Fischer’s Park next to a creek after waters receded. An iPad she was believed to have been carrying was found under a neighbor’s deck.

Chief Paul Dickinson said she had last been seen at about noon in a Lansdale home.