Are Investigators Closing in on a Suspect in Celina Cass' Death?

Investigators appear to be closing in on identifying a suspect in 11-year-old Celina Cass' death. While the official word up to now has been there's no suspect or person of interest, investigators served a warrant at Cass' parents home Thursday. Pursuant to the warrant, they impounded a pick-up truck belonging to Wendell Noyes, Cass' stepfather, according to The Associated Press.

This is the second pick-up truck impounded; the first, towed away last week before Celina's body was found, belonged to a man living with the Noyes family, Kevin Mullaney. Mullaney was arrested for car theft in 2007.

Assistant Attorney General Jane Young told local television station WMUR Thursday that authorities are not commenting on persons of interest. Previously, Young indicated her office had not identified any persons of interest. Whether the nuanced wording reflects a change in the status of the investigation and suggest police suspect Noyes -- or anyone else -- is anyone's guess.

Killer in the House?

Several unusual circumstances may prove relevant to the apparent decision by investigators to look for a suspect close to home.

* Wally Laro, Cass' paternal grandfather, seemed to suggest the killer might be a family member when he told People Thursday, "I don't want no Casey Anthony." Casey Anthony was acquitted last month on charges she murdered her 2-year-old daughter Caylee back in 2008; the cause of death in that case remained undetermined.

* Celina's mother, Louisa Noyes, did not notify Cass' father that Celina was missing, the Boston Globe reported. Adam Laro learned his daughter was missing from a television report.

* The girl's paternal grandmother, Marcia Laro, was reportedly puzzled by Louisa Noyes' failure to tell Adam his daughter was missing and disappointed by her apparent avoidance of the press during the search.

* Before Cass' body was found Tuesday, Boston's CBS affiliate said Wendell Noyes had been questioned but had been uncooperative in the police investigation, citing an unnamed source.

* Noyes appeared to fall into a troubled mental state at about the same time divers began to search the location where Celina's body was ultimately found.

* Wendell's brother and mother told reporters Thursday he is not doing well and asked the media to leave him alone.

Why Investigators Deemed Death Suspicious

One new detail that came to light Thursday is whatever made the 11-year-old girl's death appear suspicious was evident when her body was still underwater.

"Based on a visual observation of Ms. Cass' body both in the water and when we viewed it out of water, we determined that the death was suspicious, and that's why we launched a criminal investigation and why we continue to go forward with that investigation," Young said in an update, according to WMUR.

An unnamed source told WMUR that Cass' body was wrapped in a blanket when found in the river.