Vui also said the youth looked like ''caged animals'' at the facility.
The Samoa Observer newspaper reported the criticism was contained in an email to District, Supreme and Lands and Titles Court judges.
This followed a judicial visit of the facilities by Justice Vui, District Court Judge Talasa Lumepa Atoa Sa'aga and other officials earlier this month.
Vui said they were horrified to note the conditions in which children were being kept following a recent police decision to turn the Olomanu Rehab Facility at Mulifanua into a Prison farm manned by adult prisoners.
