Seattle Police says a 3-year-old boy found in a parking lot while his mom was at a nearby nightclub early on Mother's Day has been taken into protective custody.

A passer-by noticed the toddler early Sunday and brought him to security at the Trinity nightclub, in Seattle's Pioneer Square neighborhood.

A police report says the boy's mother had left him in a parked station wagon. He was able to show police and firefighters the car, with one unlocked door, and retrieved his blanket before firefighters placed him with Child Protective Services. He remains in protective custody today.