Firefighters spray water on the debris of a truck following a collision near Greece's northern town of Kavala, Saturday, Oct. 13, 2018. A speeding car carrying migrants collided with a truck in northern Greece on Saturday, killing 11 people, police said. (Proininews.gr via AP)

The debris of a car on a crane, following a collision near Greece's northern town of Kavala, Saturday, Oct. 13, 2018. A car carrying migrants collided with a truck in northern Greece on Saturday, killing 11 people, police said. (Proininews.gr via AP)

A burnt out truck on a field behind a small chapel, next to a motorway, following a collision near Greece's northern town of Kavala, Saturday, Oct. 13, 2018. A car carrying migrants collided with a truck in northern Greece on Saturday, killing 11 people, police said. (Proininews.gr via AP)

A burnt out truck on a field behind a small chapel, next to a motorway, following a collision near Greece's northern town of Kavala, Saturday, Oct. 13, 2018. A car carrying migrants collided with a truck in northern Greece on Saturday, killing 11 people, police said. (Proininews.gr via AP)

A burned truck is pictured in Sarakina, near Kavala, Northern Greece on October 13 2018. - Eleven people died in northern Greece early Saturday after a car thought to be carrying migrants crashed head-on with a truck and burst into flames, police said. Firefighters recovered 11 bodies from the car, which had been travelling towards Thessaloniki. The driver of the truck, which had been heading towards the town of Kavala, escaped the fire unscathed. (Photo by Sakis MITROLIDIS / AFP)

People standing next to a burned truck in Sarakina, near Kavala, Northern Greece on October 13 2018. - Eleven people died in northern Greece early Saturday after a car thought to be carrying migrants crashed head-on with a truck and burst into flames, police said. Firefighters recovered 11 bodies from the car, which had been travelling towards Thessaloniki. The driver of the truck, which had been heading towards the town of Kavala, escaped the fire unscathed. (Photo by Sakis MITROLIDIS / AFP)

A burn vehicle is pictured in Sarakina, near Kavala, Northern Greece on October 13 2018. - Eleven people died in northern Greece early Saturday after a car thought to be carrying migrants crashed head-on with a truck and burst into flames, police said. Firefighters recovered 11 bodies from the car, which had been travelling towards Thessaloniki. The driver of the truck, which had been heading towards the town of Kavala, escaped the fire unscathed. (Photo by Sakis MITROLIDIS / AFP)

A burn vehicle is pictured in Sarakina, near Kavala, Northern Greece on October 13 2018. - Eleven people died in northern Greece early Saturday after a car thought to be carrying migrants crashed head-on with a truck and burst into flames, police said. Firefighters recovered 11 bodies from the car, which had been travelling towards Thessaloniki. The driver of the truck, which had been heading towards the town of Kavala, escaped the fire unscathed. (Photo by Sakis MITROLIDIS / AFP)

A burn truck is pictured in Sarakina, near Kavala, Northern Greece on October 13 2018. - Eleven people died in northern Greece early Saturday after a car thought to be carrying migrants crashed head-on with a truck and burst into flames, police said. Firefighters recovered 11 bodies from the car, which had been travelling towards Thessaloniki. The driver of the truck, which had been heading towards the town of Kavala, escaped the fire unscathed. (Photo by Sakis MITROLIDIS / AFP)

A man standing next to a burned truck in Sarakina, near Kavala, Northern Greece on October 13 2018. - Eleven people died in northern Greece early Saturday after a car thought to be carrying migrants crashed head-on with a truck and burst into flames, police said. Firefighters recovered 11 bodies from the car, which had been travelling towards Thessaloniki. The driver of the truck, which had been heading towards the town of Kavala, escaped the fire unscathed. (Photo by Sakis MITROLIDIS / AFP)

A burn vehicle is pictured in Sarakina, near Kavala, northern Greece on October 13, 2018. - Eleven people died in northern Greece early on October 13 2018, after a car thought to be carrying migrants crashed head-on with a truck and burst into flames, police said. Firefighters recovered 11 bodies from the car, which had been travelling towards Thessaloniki. The driver of the truck, which had been heading towards the town of Kavala, escaped the fire unscathed. (Photo by Sakis MITROLIDIS / AFP)

A burn vehicle is pictured in Sarakina, near Kavala, northern Greece on October 13, 2018. - Eleven people died in northern Greece early on October 13 2018, after a car thought to be carrying migrants crashed head-on with a truck and burst into flames, police said. Firefighters recovered 11 bodies from the car, which had been travelling towards Thessaloniki. The driver of the truck, which had been heading towards the town of Kavala, escaped the fire unscathed. (Photo by Sakis MITROLIDIS / AFP)