GUATEMALA CITY (AP) _ Two gasoline trucks exploded in a Guatemalan port Friday, killing at least 13 people and injuring more than 200.

The explosion occurred in the afternoon in the port of Santo Tomas de Castilla, about 190 miles northeast of the capital, Guatemala City, fire officials said.

The accident resulted when the trucks collided, causing gasoline to spill and catch on fire. The exact nature of the collision was not immediately clear. The fire spread to a nearby sugar warehouse and threatened to ignite warehouses filled with chemicals, fire officials said.

About 250 people were transported to various hospitals with burns. Others were evacuated from the area, but officials did not say how many.

Rescue efforts were hampered by a loss of electricity in the area.