Prosecutors have obtained a court order to review school records.
Prosecutors obtained a temporary order preventing the children's parents from seeing them.
With that information, prosecutors took the case to a grand jury and obtained an indictment.
Prosecutors have already obtained cooperation in the case from secret informants who are current and former company employees, these people said.
Prosecutors have obtained and examined radio transcripts from the vehicles involved.
Since then, prosecutors have obtained guilty pleas from eight corporations and six individuals.
It found that the American prosecutors obtained higher conviction rates in a shorter amount of time with fewer resources.
Days later, federal prosecutors obtained Bonds' medical files as part of their perjury investigation.
Without the evidence, prosecutors obtained a conviction on the basis of the boy's somewhat shaky identification.
Prosecutors obtained convictions against 1,000 public officials and businessman between 1970 and 2009.