OSLO, Oct 10 (Reuters) - Finland's government plans to hold a news conference later on Tuesday regarding the sudden outage of a gas pipeline connecting Finland and Estonia, public broadcaster YLE and daily Helsingin Sanomat reported on Tuesday.

The Finnish prime minister's office was not immediately available for comment when contacted by Reuters.

The Balticconnector link was shut early on Sunday on concerns that gas was leaking from a hole in the 77-km (48 miles) pipeline. Finnish operator Gasgrid said it could take months or more to repair if a leak is confirmed.

No potential causes for the outage could be ruled out for the time being, including sabotage, a spokesperson for Estonian gas system operator Elering said on Monday.

The pipeline between Inkoo in Finland and Paldiski in Estonia crosses the Gulf of Finland, an arm of the Baltic Sea that stretches eastwards into Russian waters and ends at the port of St Petersburg. (Reporting by Terje Solsvik in Oslo and Anna Ringstrom in Stockholm; editing by Gwladys Fouche)