Odisha border police and Andhra Pradesh Vizag police achieved success in their anti-Maoist operations with 20 Maoists, who were working in Odisha-Andhra Pradesh border, surrendering here before the Vizag rural police on Saturday.The Maoists, seven militia commanders and 13 militia members, surrendered before Vishakhapatnam Range DIG A Ravi Chandra. They were involved in various offences in Koraput, Malkangri, Nabarangpur, Rayagdada and Gajapati districts of Odisha and Srikakulam, Viyaynagaram and Vishakhapatnam in Andhra Pradesh.