MADRID (AP) — Emergency services say a catamaran carrying day-tripping tourists along the coast of northwestern Spain has caught fire, injuring five people.

Authorities in the Galicia region say on their Twitter account that two people sustained serious burns and were airlifted to a hospital Tuesday. Three others are being treated at local hospitals.

Spanish media say the boat was carrying 48 passengers and four crew members when it hit a smaller vessel and a blaze broke out. Some passengers reportedly jumped into the sea as the flames spread.

The boat was traveling between the Galician coast and the small island of Toxa, north of Vigo, on a sightseeing trip. The blaze sent a thick plume of black smoke over the sea.