A detailed 2011 analysis of NEP client experiences in Los Angeles suggested that as many as 7% of clients report negative encounters with security officers in any given month. Given that syringes are not prohibited in the jurisdiction and their confiscation can only occur as part of an otherwise authorized arrest, almost 40% of those who reported syringe confiscation were not arrested. This raises concerns about extrajudicial confiscation of personal property. Approximately 25% of the encounters detailed by respondents involved private security personnel, rather than local police.