“Emergency services are looking for a three-year-old boy who went missing at a playground.
Police said Noah was at the playground at Merriam Close in Brantham, Suffolk, at about 15:00 BST, when he was reported to have run down a nearby alleyway towards a newbuild housing estate.
He is described as white, with curly ginger hair, and was wearing a white Bluey T-shirt, shorts and white trainers.
Residents have been asked to check their gardens, sheds and outbuildings. A helicopter has been pictured flying over the scene.
Noah was with a relative at the playground but "became separated" from them as they left, Suffolk Police said.
Passengers on trains between Manningtree and Ipswich have been told their services must run at a reduced speed due to the searches.
Rescue teams have been carrying out door-to-door inquiries in the area.
BBC reporter Zoie O'Brien, who is at the scene, says more than 100 people have joined the searches on Tuesday evening.
She said the helicopter appeared to be circling above fields and a wooded area behind the housing estate.”