When an Ethiopian woman called Eleni disappeared amid the chaos of the Beirut blast there seemed little hope of discovering what had happened to her.

In the wake of the explosion that devastated the Lebanese capital, rescuers searched through the rubble to try to locate hundreds of dead and missing people.

As the death toll mounted, the only clue to Eleni’s fate was a pool of blood on her employer’s kitchen floor.

It fell to two complete strangers - who had never met Eleni or each other - to try to solve the mystery using social media.

Photo credit: BBC