Lisbon - A fire in central Lisbon prompted the evacuation of dozens of people overnight in the Portuguese capital, media reported Monday.

The fire was believed to have started in an uninhabited building where drug addicts sometimes stayed. It affected two nearby buildings. Several hotels were also preventatively evacuated.

About 150 people sought shelter in a nearby cinema. Two among the nearly 100 firefighters battling the flames were reported injured.

The authorities announced an investigation into the causes of the blaze. (dpa)