Jayden Barnard was supposed to be taking a nap.
But Jayden, 3, and his 2-year-old brother got out of bed, unlocked the apartment door and wandered away from their south Wichita apartment Wednesday afternoon.
The younger brother was found in a commons area of the complex by the apartment manager, Wichita police Capt. Brent Allred said.
Jayden was discovered at the bottom of the lake at Southlake Village Apartments, 4141 S. Seneca, just before 5 p.m. He was rushed to a local hospital, where he was pronounced dead.
"It's a sad situation, a tragic situation, an unfortunate situation," Allred said.
The boys' 25-year-old mother had worked a late-night shift and was asleep when the children went outside, Allred said.
"The two children were taking a nap and woke up," he said. "The 3-year-old unlocked the door, went down the steps, along with the 2-year-old following."
Jayden must have figured out how to unlock doors recently, family members told police.
"It's obvious mom was tired from working... and just fell asleep," Allred said. "She woke up just shortly before they walked out the door but had fallen back asleep because she was tired."
The boys and their parents had been staying with grandparents for about a week while moving to a new residence, he said.
The family had enjoyed taking walks along the shoreline of the former sandpit lake, Allred said, "so they were familiar with it."
The lake where Jayden was found was only about 20 yards from the apartment door.
Children gravitate toward water, said Kathleen Reilly, spokeswoman for the Consumer Product Safety Commission, so it would be natural for Jayden to head straight to the lake.
Wichita police think Jayden walked out onto a floating pier, lost his balance and fell into the water, Allred said.
"They panic," Reilly said. "They don't know what to do. They don't scream."
Jayden's body was found in 20 feet of water, about 15 feet from the pier, Allred said. He was not breathing when divers pulled him from the water.
More than 50 public safety officers took part in the two-hour search for Jayden, along with an undetermined number of local residents checking nearby areas, Allred said.
Police have not completed their investigation, Allred said, but "we don't see anything" criminal.
"It's just an unfortunate, tragic incident," he said.
More than 70 children have drowned nationwide since Memorial Day, Reilly said. The Consumer Product Safety Commission launched a new water safety campaign on Thursday to stress water safety rules for children.
Jayden was the third child to drown in the Wichita metropolitan area in June. All were under the age of 6.
"Our hope is that we have no more," Allred said. "These are hard on everybody."
Allen Gene Haywood III, 4, died June 7, one day after being pulled from the bottom of an apartment complex swimming pool in west Wichita.
Laura Lay, 5, died June 14, two days after she was found in an above-ground pool during a family gathering at a residence about five miles east of Sedgwick.