Around 120 Police forces are guarding EVMs connected with Goshamahal constituency, at Koti Women's College, in Hyderabad. While tight security is being maintained in the inner circle of three-tier security ring, the middle and out layers are being guarded by Special Police and civil police officers. About 18 CCTV cameras are being operated for strict vigil. Any queries regarding security must be resolved with the Returning Officer concerned, a police official said. On counting day, additional forces will be deployed and only those with passes will be allowed, he added.