WARSAW, June 30 (Reuters) - A Polish woman and her 7-year-old son have died after plunging from a Baltic Sea ferry travelling from Sweden to Poland, a Polish police spokesman said on Friday. Swedish authorities said on Thursday the child had fallen off the vessel and that the mother proceeded to jump overboard in an attempted rescue. The Swedish ferry, Stena Spirit, was in the Baltic midway through its journey to Gdynia in Poland from Karlskrona in Sweden when the incident occurred, rescue officials said on Thursday. "At the moment we have no information whether this was due to a malfunction of the ferry," Stena Line spokesperson Agnieszka Zembrzycka told TVN 24. Swedish police issued an appeal to Polish passengers via Poland's state-run news agency PAP asking for information that could explain how the accident occurred.

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Persons: Mariusz Ciarka, Agnieszka Zembrzycka, Terje Solsvik, Alan Charlish, Anna Ringstrom, Mark Heinrich Our Organizations: WARSAW, TVN, Thomson Locations: Polish, Baltic, Sweden, Poland, Swedish, Gdynia, Karlskrona, Oslo, Warsaw, Stockholm