A wood-burning stove exploded in the two-story building late last night in the town of Tondela, around 250 kilometres north of the Portuguese capital of Lisbon, local mayor Jose Gomes Jesus told reporters.
Civil Protection Agency commander Paulo Santos told local radio station TSF that at least 50 people were injured.
Witnesses speaking to local television channels said the fire caused panic among the roughly 60 people in the building who were taking part in an evening amateur card tournament.
Authorities could not immediately be reached for comment.
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