BEIRUT (AP) — About 30 security agents showed up just after midnight, breaking down the door to an apartment in the town of Daraya near the Syrian capital of Damascus. They grabbed a 24-year-old university student and drove off.

That was a year ago. The young man, who had been providing aid to Syrians displaced by the country’s civil war, was never heard from again. His family was told by former prisoners that he ended up in one of the torture dungeons of President Bashar Assad’s regime. They don’t know if he’s dead or alive.