For various reasons, such as a private agreement with the parents or some sort of dispute, grandparents often do not have formal custody.

ECONOMIST: Grandparents raising grandchildren

The reports came after a chaotic day in which some law enforcement sources initially told media outlets that a suspect had been arrested, only to have the FBI and Boston police issue formal denials that any suspect was in custody.

CNN: Healing in Boston as investigators seek 2 seen near bombing

The ABC's Australia All Over presenter Ian 'Macca' McNamara announced the new additions to the Register at a ceremony hosted by the State Library of Victoria in Melbourne, and presented representatives from each of the institutions, which have custody of the documents, with a formal citation.

UNESCO: Communication et information

Dmitrichenko remained in police custody pending a court hearing on Thursday in which prosecutors will move for formal charges against the three men, and it was unclear whether they had lawyers.

NPR: Dancer Admits Being Behind Bolshoi Chief Attack