As the uprising began, the Syrian government waged a campaign of arrests that captured tens of thousands of people, according to lawyers and activists in Syria and human rights groups. In response to the uprising, Syrian law had been changed to allow the police and any of the nation's 18 security forces to detain a suspect for eight days without a warrant. Arrests focused on two groups: political activists, and men and boys from the towns that the Syrian Army would start to besiege in April.[45] Many of those detained experienced ill-treatment.