Bomb explodes in courthouse in northern Greek city of Thessaloniki, 1 wounded

Bomb explodes inside Greek courthouse, 1 wounded

Bomb explodes outside courthouse in northern Greek city of Thessaloniki

Bomb explodes in northern Greek city

THESSALONIKI, Greece — A powerful bomb exploded inside a courthouse in the northern Greek city of Thessaloniki Friday, sending smoke billowing in the building. There were no immediate reports of injuries.