Some guy called me claiming to be from ica. he asked me to go to an isolated place immediately and answer his questions. he then asked me if i am at my workplace or home, i told him i am at my workplace. he then asked me since how long i am staying in singapore, i told him if you are from ica you should know this, he said yes we know everything about you but this is for verification. iI told him i am not comfortable in answering these questions as i have no proof that he's from ICA, he said ok then we will pick you from home and take you in custody and then he disconnected the call.