Little Girl Drowns as Revelers Sing 'Happy Birthday' Sinaia Moore found in 4-foot pool at backyard party By Neal Colgrass, Newser Staff Posted Jun 2, 2014 4:14 PM CDT 42 comments Comments (Shutterstock) (Newser) – A 4-year-old girl met a tragic fate in Columbus, Ohio, on Saturday night as people at a backyard party sang "Happy Birthday" to another child, the Daily News reports. Police say the revelers found little Sinaia Moore at the bottom of the 4-foot, inground pool and tried to revive her, but she was unresponsive, reports the AP. Paramedics arrived and took her to a hospital, but she was dead when they got there. Police say that earlier on, she wore a float vest in the pool, but no one noticed her re-enter the pool without a vest. "I see nothing that indicates that anyone was inattentive, negligent in any manner," a police sergeant told the Columbus Dispatch. "It just seems like this is clearly a sad, unfortunate accident." Many of the 75 to 100 partygoers were singing to the birthday girl, a 1-year-old, when Sinaia died.