Two helicopters are being deployed in the search for a missing youngster who was last seen getting into a van.
A local search team is calling for more volunteers in the hunt for a five-year-old girl believed to have been abducted.
April Jones was playing with friends near her home in the Mid Wales town of Machynlleth at around 7pm on Monday when she went missing.
She was last spotted by another child getting into a van wearing a purple knee-length coat with grey fur around the hood, a white polo top and black trousers, said police.
Police are to reveal more details about the vehicle
Two helicopters are being deployed to scour the area as part of intensive police operations. Hundreds of residents from the market town have joined in the hunt and are coordinating their efforts at the Machynlleth Leisure Centre.
Speaking from the centre, Inspector Lyn Rhys told locals he would divide them into search teams to avoid an overlap of work.
Police are expected to reveal further details during a press conference later on Tuesday.
A Dyfed-Powys Police spokeswoman said: "Her abduction took place around 7pm in the Bryn Y Gog estate in Machynlleth. It was witnessed by another young child when April was seen getting into a grey or light-coloured van, or van-sized vehicle.
"While the details of what happened are vague at the current time, it appears the suspect left the scene and drove off with April."
Machynlleth is a small market town surrounded by countryside
Meanwhile volunteer Anwen Morris appealed for more people to come forward and help. Many have already taken time off work to look for April and have been out through the night on quad bikes and off-road vehicles.
Ms Morris told Sky News: "We need bodies down here. We need people in cars, we need people on foot to search the town. We need people up on the mountain. We need anybody that is in the area that can help."
Detective Superintendent Reg Bevan of Dyfed-Powys Police told Sky News that because the initial account of April's abduction came from children, police were involved in a "delicate and lengthy process" to get the best information.
He said: "Hopefully, later this morning I'll have some more details around the vehicle, specific details, and we are pursuing a number of lines of inquiry around that vehicle, where it may or may not be at this moment in time."
April was playing on the Bryn Y Gog estate
The town, which sits on the southern outskirts of Snowdonia National Park, only has a population of 2,000.
Powys County Councils said refuse and recycling collections had been suspended in the town on Tuesday so council staff could help with the search.
Local restaurant owner Razul Islam told Sky News: "There are hundreds of people out looking for her."
"It is such a small town and nearly everyone is out looking for her - I'm shocked that it has happened in a town like this."
Local petrol station owner Nerys Zjalic said she reopened her garage to help with the search.
"My friend called to ask if we would open so people can get petrol to help in the search. Locals are out in full force searching for her."
April had been out riding a bike before she vanished
Ms Zjalic, who knows the missing girl's family, said people had been coming from far and wide to help with the search.
"It's unbelievable - you just don't think that something like that would happen in a small town like Machynlleth.
"Nothing will be the same again - this is a small little market town and you think children are quite safe, but this shows us it's not the case."
People have taken off time from work to help with the hunt
Chris Dudley, who works at the Skinners Arms pub on Penrallt Street, said all the locals were out looking for her on Monday night, including in "the cemeteries, the golf field, playing field, everywhere you can think of."
Police have asked anyone with information to call them on 0300 200 0333.
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