Police have arrested a man in connection with the hit and run crash that killed Violet-Grace Youens.
The 23-year-old was arrested on suspicion of being carried in a stolen vehicle.
He has been released pending further enquiries.
Violet-Grace, aged four, died on Saturday night.
She and her grandmother Angie French were hit by a stolen car on Friday afternoon in Prescot Road, St Helens.
Ms French remains in a serious but stable condition.