Where to start
If you are an asylum-seeker and have been separated from a family member on your way to Bulgaria, contact the Red Cross Restoring Family Links program. Refer to their tracing services only after you have exhausted all other means of finding/contacting your relative.
The Red Cross helps locate people, provide information about missing individuals and reunite families. They can help you exchange messages with your family members, even if they are being held in detention.