Fourteen children, who were arrested after the death of the boy in an industrial property at the guilt, were released on bail.
The body is said to have been missing from Lython Kar, reported, found inside the building.
On Friday evening, Northumbria Police was summoned to Fairfield Industrial Park in Bill Kuwaiti Gates.
Eleven boys and three daughters between the ages of 11 and 14 were arrested for premeditated murder and remain in police arrest.
Previously, the school student was remembered as a “valuable and very lovely” student by David Thompson, head of the Herbborn Comprehensive School Teacher.
In a Facebook post, he talked about “the sad loss of one of our students” and added: “Our school community is broken.
“Leighton was a valuable and very lovely member of the year 9 and loses everyone,” he said.
“We extend our condolences to the family and loved ones of Light at this extremely difficult time,” he said.
“We as a school, we will gather together to support each other through this disaster.”
Anyone who wanted to pay his respect was invited to put flowers at school.
Shortly after 8pm, he warned of reports of fire.
The fire was extinguished for a short time, but the fear for the teenager has increased, which is thought to have been in the area at the time.
“Unfortunately, following searches by police and Northumbria partners in Tyne and Wear Fire and Rescue Service, a 14 -year -old body is thought to be located inside the building,” a police spokesman said.
“His next relative is informed and is currently being supported by specialized officers.”
In a joint statement, local consultants Amanda Wincher, Ian Peterson and Paul Duston said that they “shared the sadness of our society from this disaster” and conveyed their good wishes to the boy’s family and friends.
“We have been in contact with residents about concern about anti -social behaviors in Firfield industrial real estate and former Harrison Slipway site,” they said.
A broken fence plate next to the warehouse and the reported fire were among the concerns.
They said it was intertwined with Securitas, the Gates Council, the Northumbria Fire Service and the “Some Actions”.
A police cord was on the scene on Sunday, with the number 14 blue balloons, along with a tribute to the flower, were among the mourners.
One of the messages, which hangs on a bunch of flowers, reads: “Thank you for illuminating our lives. Beyond the words.”
Another message said, “Rest in Paradise, Lighton. Always in our heart. Flying with angels. It took you too soon. I love you forever.”
A GOFUNDME page set by a family friend to support Light’s mother at funeral costs collected more than 11,000 pounds to 7.30 pm on Sunday.
Luis Jenkins, a senior detective inspector from Northumbria, previously described the events as “a very tragic incident in which a boy unfortunately lost his life”.
“Our thoughts are with the Light’s family because they start trying to process their beloved loss,” he said.
“Our specialized officers in any way they can support them.
“We want their privacy now to be respected.”
He said a cord is created while police are conducting an investigation to create “full conditions around the incident”.
He added: “Officers will be present in the area to provide” confidence in the public. “
Anyone who has information that can help investigate the investigation has been asked to be in contact with the Northumbria police.
“My heartfelt condolences with Light’s family and friends are devastating at this time,” said Susan Dongwrith, police and crime commissioner.
“I am constantly updated by the Constable President and his team and I would like to thank all the emergency services involved in answers and constant questions,” he said.
“I know that this is a shock for the Bill Kuwaiti community, and I may make an officer’s request for anyone who has information, can be in contact with Northumbria police.”
