The attorney general, Sheik Saud Mojeb, said Tuesday that detainees signed over 400 billion Saudi riyals, nearly $107 billion, in assets that included cash, real estate and other holdings. But Saudi authorities did not disclose who had been accused of what illicit activities, nor the amounts individuals signed over to forestall charges. The total number of detainees was not specified, although Mojeb said 381 people were subpoenaed for questioning. Of those taken into custody, about 100 were thought to have been freed from detention, according to observers and news reports. The attorney general said 56 people remained in custody and could face formal charges.