POST FALLS - Nearly three years after the death of 2-year-old Karina Moore, her Post Falls foster parents were arrested on Thursday in connection with the toddler's tragedy.

Jeremy Clark, 36, and his wife, Amber Clark, 28, were arrested after a grand jury assigned to the case came back with an indictment on Wednesday night.

Both are being held at the Kootenai County jail on $25,000 combined bonds on two counts of injury to a child, one count of destroying, altering or concealing evidence and one count of perjury.

A press conference at the Post Falls Police Department detailing the arrests set for Thursday afternoon was canceled on site by Kootenai County Prosecutor Barry McHugh after the conference was set to begin.

McHugh said the decision to cancel the press conference was made because the case was still sealed by a judge on Thursday and the Clarks hadn't made their first appearance in court. Their appearance will likely be held this afternoon.

McHugh and Post Falls Police Chief Scot Haug said they couldn't comment on the case or the grand jury indictment.

The grand jury met on the case from Monday through Wednesday.

Karina's biological mother, Samantha Moore, was at the conference with attorney Rolly Watson, who represents her in a civil lawsuit, but both exited the room as soon as the cancellation was made.

Samantha hugged Post Falls Detective Dave Beck and thanked the agency for its work on the case.

The Clarks, who had been Karina's foster parents for more than a year, told police that Karina fell about 4 feet down a flight of carpeted stairs during the Jan. 6, 2009, incident. Amber Clark told police that she was on the couch and recognized that the child might fall, but the child fell to the bottom of the stairs before she could help. She called the incident a tragic accident.

Clark said she performed CPR until emergency responders arrived and flew her to Sacred Heart Medical Center in Spokane. Police said Karina was at the bottom of the stairs when they arrived.

Karina was brain dead and comatose afterward and died 10 days later.

The Spokane County Medical Examiner's Office ruled the case a homicide, citing "blunt force head injuries."

However, the examiner's report did not corroborate with the initial police investigation nor the opinions of multiple doctors police interviewed at Kootenai Medical Center and Sacred Heart Medical Center in Spokane, which determined the head and spleen injuries were consistent with an accidental fall.

The case sparked a variety of public outcry. Moore retained an attorney and earlier said she didn't believe it was an accident. She declined to comment on Thursday, per the advice of her attorney.

John Howard, the medical examiner who performed the autopsy of Karina, said in an email that he could not comment on the evidence or factors that led him to the homicide determination.

Moore filed a civil lawsuit against the Idaho Department of Health and Welfare in January this year, claiming she reported abuse allegations against the Clarks to social workers twice, but her concerns weren't addressed.

The suit claims the IDHW "negligently and with reckless indifference failed to supervise the foster home ... which resulted in the death of Karina."

Karina and two of her siblings, a brother and sister, had been living with the Clarks. The other children were removed from the Clarks' care after Karina's incident.

The Clarks haven't been booked in the local jail before. They had been a registered foster family for two years and had taken in dozens of kids during the time before Karina's incident.

A request to interview the Clarks was not returned on Thursday.