According to the research findings, it can, therefore, be said that the perpetrators of male sexual assault are characterized by physical aggression, strong physiques, ‘street smartness’ and other inmates. According to Lara Stemple, executive director of Stop Prisoner Rape, Inc., male prisoners are more likely to be sexually assaulted by other male inmates, while female inmates are more likely to be assaulted by male prison staff. The U.S. Bureau of Justice Statistics (BJS) recorded a total of 5,386 allegations of adult sexual assault in the country’s prisons during 2004, the most occurring in State prisons (3,172), followed by local jails (1,700), Federal prisons (284), private prisons (210) and other facilities (20). These figures increased by 855 (16%) during 2005 when the BJS registered a total of 6,241 allegations of adult sexual assault, with State prisons again scoring the highest (4,341) followed by local jails (1,384), Federal prisons (268), private prisons (204) and other facilities (44). The BJS provided further information related to its 2005 prison sexual assault statistics. Staff sexual misbehavior accounted for 38% of the allegations, while 35% involved inmates forcefully engaging in sex with other inmates, 17% involved sexual harassment by prison staff and 10% involved inmates engaging in abusive sexual acts with other inmates. The percentage of male prison staff involved in sexual misbehavior was 54.3% while female prison staff accounted for 45.7% of the cases.