Three people arrested on suspicion of the murder of a Thornhill toddler have been released without charge.
Summer Mai Rogers-Ratclifffe, of Nook Green, Dewsbury, died on February 28 last year.
A 33-year-old man and two women, aged 26 and 56, were arrested in connection with the death of the 21-month-old in September.
But police today (Friday) confirmed the trio, all from the Dewsbury area, have been released from bail without charge.
A police spokesman said: “West Yorkshire Police’s Homicide and Major Enquiry Team carried out a detailed and thorough investigation into the deeply tragic death of Summer Mai Rogers-Ratcliffe.
“This was a complex investigation in which evidence was sought from a number of medical experts and formed part of a comprehensive case file that was submitted to the Crown Prosecution Service (CPS).
“This has now been reviewed by the CPS who believe there is insufficient evidence in order to bring charges against any individual.
“The investigation will remain open pending any new evidence and the three suspects, arrested as part of the investigation, have been released from police bail.”
An inquest was opened and adjourned in May 2012 to allow the release of Summer’s body for burial, but there has yet to be an official ruling on the cause of her death.
Police earlier said enquiries suggested Summer had died as the result of head injuries.
Meanwhile Kirklees Council is carrying out its own investigation.
A spokesman said: “A Serious Case Review is ongoing into this case and therefore it would not be appropriate for us to comment.”