Warsaw - Eighteen people died and 21 more were injured when a hotel burned down Monday on Poland's Baltic Sea coast, local media reported. The fire was so big and had spread so much that there was no hope for extinguishing it, and rescuers concentrated on saving people from the flames, a firefighter told TVN24.

Witnesses said some hotel guests were injured when they jumped from windows.

Police and prosecutors were on the scene investigating to try to determine the cause of the fire. Prime Minister Donald Tusk was due to travel to the scene later Monday, while President Lech Kaczynski declared a day of national mourning.

Seventy-seven people were registered in the hotel in Kamien Pomorski. (dpa)