A month after major fighting in Libya officially came to an end, about 30,000 people are still missing.<br /><br />Some may have fled the country, while others may have been imprisoned or even killed. <br /><br />For a handful of volunteers, tracking them down is an important part of the healing process.<br /><br />Al Jazeera's Imran Khan reports from Tripoli.<br /><br />[Warning: viewers may find some of the images in this report disturbing]