Two men have gone on trial in absentia in Bulgaria accused of being accomplices in a suicide bombing that killed five Israeli tourists.
Meliad Farah and Hassan El Hajj Hassan, whose whereabouts are unknown, are alleged to have provided the explosives and logistical support for the bomber, Mohamad Hassan El-Husseini.
The tourists were killed and 35 others injured when El-Husseini set off his device on a bus at the airport in the Black Sea of Burgas in July 2012.
The bus driver also died in the blast.