The estate's north gate had a physical padlock, not a software failure. At 7:28 Maua stood in front of it with Corporal Nyambura while storm water ran beneath the metal panel. Silas had finally arrived in a company raincoat.
"Open it," Nyambura said.
"The main gate is open. This lane is closed for safety."
"We are looking for children inside."
"My team is already searching."
Maua held up Nuru's message: *we are inside. gate is closed.*
"We need the path itself."
Silas selected a key slowly. "This closure is under the stray-control protocol. The pedestrian lane was an animal entry point."
"Closing time?"
"4:20."
"How were children meant to enter?"
"Residents were notified."
"Show me."
The notice had gone into the residents app at 3:50 the day before: *temporary pedestrian closure during animal-control sweep; use main vehicle entrance.* There was no school-route notification.
"Nuru does not have the residents app," Daniel said.
"The parent is responsible," Silas replied.
The sentence was true and incomplete.
"Yes," Maua said. "Daniel and I failed at custody handoff. That does not make your gate design automatically safe."
They opened the lane. The main vehicle entrance lay roughly three hundred meters away, a much longer diversion in heavy rain.
A technician brought the access data. The pedestrian reader had been switched off at 4:18. A battery-powered motion sensor inside the lane remained active: motion at 4:42, 4:43 and 4:45.
"That means someone was inside after the lock?" Nyambura asked.
"Someone or an animal. It is a motion sensor, not identity."
Silas said, "The dog."
"Kito was seen on the market side in that period. We do not know."
Maua asked for the week's gate-change history. The pedestrian gate had closed early four times. On two occasions guards wrote "children redirected main gate," but there was no child name or escort record. Once the gate remained open for an ambulance delivery. Implementation depended on the shift.
Joseph was called. He said he had asked whether school knew about the closure. In the work chat his supervisor replied, *residents notified.* Nyambura requested preservation of the chat rather than allowing people to circulate private screenshots out of context.
Silas produced the written closure order. It said: *advance closure to support zero-stray sweep; exceptions via guard escort.*
"Where is the escort log?" Maua asked.
There was none.
"So the exception exists, but the process for a child using it does not."
Silas answered sharply, "And your custody gap brought the child here."
"Yes. We will own that. You still own this part."
The padlock key log showed the gate was physically locked at 4:19 and not reopened until police arrived. The motion sensor, independent of the network, continued registering activity. None of those details proved where the children were. Together they made the estate interior more urgent than roads already searched.
A technician added another fact: there was no named child exit recorded at the main gate.
Nyambura radioed, "Treat the estate as a containment search area. All internal shelters."
The fear changed shape. They were no longer searching kilometers of flooded streets.
The gate had closed early.
There had been movement inside.
And there was no verified exit.