Australian police arrested two more men on Wednesday in an operation they say thwarted alleged attack plots last year on targets including a Sydney navy base. The arrest of Abdullah Salihy, 24, and Mohamed Almaouie, 20, brings the total number of arrests in the operation to 13 people, according to New South Wales Police Deputy Commissioner Catherine Burn. Police charged five people, including a 15-year-old boy, over the same alleged terror plot earlier this month. Burn said that there is "specific threat, there is no current threat, there is no pending threat," and encouraged residents to "go about your business." Australia has been on high alert for attacks by homegrown radicals since last year.