ATHENS, Greece (AP) — Nearly two months after a dilapidated fishing trawler crammed with people heading from Libya to Italy sank in the central Mediterranean, killing hundreds, relatives are still frantically searching for their loved ones among the missing and the dead.

Many questions remain about Greek authorities’ response and exactly how and why the boat, carrying an estimated 500-750 people mostly from Pakistan, Syria and Egypt, capsized and sank in the early hours of June 14 in what became one of the deadliest migrant shipwrecks in the Mediterranean.

Only 104 people were pulled from the sea alive — all men and boys. Eighty-two bodies, only one of them a woman, were recovered. The rest, including women and children, sank in one of the deepest parts of the Mediterranean. With depths of around 13,000 feet in that area, any recovery of the vessel or its victims are all but impossible.

Identifying the dead and determining exactly who was on board is a slow, meticulous, heart-wrenching process.

By Aug. 7, around 40 of the recovered bodies were identified through a painstaking process combining DNA analysis, dental records, fingerprints and interviews with survivors and relatives, police Lt. Col. Pantelis Themelis, commander of Greece’s Disaster Victim Identification Team, told The Associated Press.

The task is complicated by a lack of information on who was on the boat, and by the fact that many were from countries where, due to war and civil turmoil, relatives are struggling to provide DNA samples.