Sorry, missed this.
Unlikely anyone will let you know if a person is wanted vide warrant. Once screened and wanted, how to explain? But if you walk in yoursef and request, you sure kena arrested and handcuffed if found to be wanted. The current system screens everyone who makes a report. You can be a complainant yet arrested.
One should know if wanted or not. Missed court appointment?
Such cases will be referred to Central Police at Cantonment. I believe they are the only Warrant Enforcement in the SPF. If you have to, surrender in the morning. Easier for officers to deal with you as they need directions from IO of your case.
If road block and check you are wanted, very inconvenient. Someone has to drive your car away.