An Ada County grand jury on Tuesday indicted both Melissa Scott Jenkins and Daniel Ehrlick Jr. on 1st degree murder charges in connection with the death of 8-year-old Robert Manwill.
Both are also charged for failing to report a death, Boise Police Department Deputy Chief Jim Kerns said.
Robert was reported missing July 24, sparking an unprecedented police and community effort to find him before his body was discovered in the New York Canal southeast of town near Kuna.
Kerns said Ehrlick was being held without bond in the Ada County Jail.Jenkins is being held on a $2 million bond.
"Probably no other case in Boise history has touched so many people," Kerns said.
More than 9,000 man-hours were logged in the 10 days he was missing by Boise police, FBI, Idaho probations and parole and other local and state agencies.
He said the arrests were a "major step" in the investigation, but asked anyone with information about the activities of the two in the week leading up to Robert's reported disappearance to contact police.
The Idaho Statesman learned of Ehrlick's arrest about two hours prior to the police announcement from his father, Daniel Ehrlick Sr.
Ehrlick Sr. said he was concerned only about the death of an 8-year-old boy and resigned to his son's arrest.
Ehrlick Jr. and Jenkins are scheduled for arraignment Wednesday morning in Ada County, according to a release from the prosecutor's office. Idaho law gives prosecutors 60 days to decide if they will seek the death penalty.
Robert Manwill was reported missing from Ehrlick and Jenkins' home on July 24, 2009, and was later found deceased in the New York Canal near Cloverdale Road in Boise August 3rd.