PEARL RIVER — A Silver Alert has been issued for a missing 69-year-old Pearl River woman last seen early Thursday morning.

Marilyn Horrigan was discovered missing from her home along Henry Road at around 2:20 a.m., Louisiana State Police said.

Horrigan is a white woman with green eyes and black hair. She is 5’3” and weighs approximately 137 pounds, and was last seen wearing a purple nightgown with black dots, black sweatpants, black and white tennis shoes, and carrying a black purse. Family told authorities that Horrigan has a medical condition that may impair her judgment.

She is believed to be traveling on foot.

Anyone with information about where Horrigan may be is asked to call the St. Tammany Parish Sheriff’s Office at (985) 898-2338.