The search for missing Machynlleth five year old April Jones got underway at daybreak with hundreds of specialist search officers involved.
It follows a decision by police to suspend night-time searches for April who was last seen on Monday evening near her home in Machynlleth, Powys.
Mark Bridger, 46, has been arrested on suspicion of murder. And Police have until 4-50pm today to either chare Bridger or release him.
Police confirmed on Friday morning that Mr Bridger was now being held on suspicion of murder, rather than an earlier child abduction arrest.
But in the last update from Dyfed-Powys Police on Friday evening, the investigation team insisted that they remained determined to find April.
"Despite the developments in the investigation, our focus remains on finding April and the search will continue," stated Supt Ian John.
"There are eight police teams of more than 60 specialist search trained officers.
April Jones was playing near her home when she disappeared on Monday evening
"All of the blue light services are involved in the search, including the fire service, ambulance, coastguard, RNLI as well as the RAF mountain rescue service and some 150 members of the Mountain Rescue service from across the UK.
"There are rescue dogs and a host of specialist equipment being used, including boats with sonar equipment and the helicopter with thermal imaging capability."
Around-the-clock searches began on Monday evening, with teams focusing on areas around the River Dyfi in the mid Wales town.
But on Friday evening, police confirmed that they were suspending night-time searches.
Police officers overseeing the investigation have praised the response of the community, and volunteers who have come from far and wide across Britain.
Speaking on Friday, Supt Ian John said: "Following the change in dynamics of the search operation I have been overwhelmed by the continued support of the community today.
"Just one example of this was when some of those community members who have been involved in the search this week returned here this morning to deliver food and drink to the trained search teams carrying out their work in challenging conditions.
"There have been so many example of kindness shown, not just by this community but by people from across the country."
The message was echoed in an open letter from the Chief Constable of Dyfed-Powys Police, Jackie Roberts, to volunteers.
"Your commitment has been an inspiration to us all and I will always be very grateful for your selfless act in our efforts to find April," she wrote.
"April's family and I have been overwhelmed by the reaction of you all and I am extremely proud to be your chief constable; we will always be indebted to you."
Dyfed-Powys Police have renewed an appeal for information about Mr Bridger's movements and that of his vehicle.
"We are looking to trace the movements of Mark Bridger between 6.30pm on Monday and 3.30pm on Tuesday, and any sightings of him between these times," said Det Supt Reg Bevan.
"We also need information regarding the movements of the blue Land Rover Discovery, registration L503 MEP, between these times."
Forensic examination is taking place on the vehicle, while officers have also been searching a farmhouse in the nearby village of Ceinws, where the arrested man was known to be living most recently.
It has also emerged Mr Bridger had attended Ysgol Gynradd Machynlleth at the same school parents' evening as April's parents hours before she went missing.
A special area has been created in the foyer of the school, after a request from April's mother, with pupils creating small individual heart-shaped messages.