One of the police officers who took Mark Bridger into custody told the court of their conversation following his arrest.
Mr Bridger was stopped by police while walking along a riverside road the day after April disappeared.
"I stopped the police car and immediately asked what his name was - he told me it was Mark Bridger" PC Philip Saunders.
"I arrested and cautioned him. He replied: "I know what it's all about - it was an accident, I crushed her with the car. I don't know where she is".
The court heard Mr Bridger said: "As I was going to drive away two girls on bikes came across me, I then got out and saw one girl lying under my car. "I don't know where she is".
"I picked her up and put her in my car, which is left hand drive, and put her on the front seat".
PC Saunders said Mr Bridger was handcuffed and searched on the roadside. He told officers "he needed to talk" but was told no questions would be asked until he was at Aberystwyth Police Station.
PC Saunders said: "He continued to provide his account to me in the back of the police car for the 30-minute drive".
"He was emotional throughout the process, from the point of arrest he became very emotional and was crying. "He was an emotional wreck."
The parents of murdered April Jones fear that killer Mark Bridger may never reveal where the body of their daughter is.
ITV News correspondent Carole Green has covered the month-long trial of Mark Bridger at Mold Crown Court. Here she gives her personal view.
The disappearance of April Jones prompted the biggest search of its kind in British policing history.