- 108 - Siblings with existing bonds should in principle not be separated by placements in alternative care unless there is a clear risk of abuse or other justification in the best interests of the child. Guidelines for the Alternative Care of Children, attached to UN General Assembly Resolution 64/142 , February 24, 2010, UN Doc. A/RES/64/142, para. 57. 561 Cf. Guidelines for the Alternative Care of Children, attached to UN General Assembly Resolution 64/142 , February 24, 2010, UN Doc. A/RES/64/142, para. 57. 562 Cf. Guidelines for the Alternative Care of Children, attached to UN General Assembly Resolution 64/142 , February 24, 2010, UN Doc. A/RES/64/142, para. 64. 563 Communication of the First Juvenile Trial Court of January 8, 1997, addressed to the Head of the Juvenile Department of the Attorney General’s Office (evidence file, folio 32). 564 565 Cf. Communication of the First Juvenile Trial Court of January 27, 1997 (evidence file, folio 4384). 566 Cf. Ruling of the First Juvenile Trial Court of August 6, 1997 (evidence file, folio 4304). 567 Cf. Study prepared by the Niños de Guatemala social worker on February 3, 1997 (evidence file, folio 4382).