According to the Ukrainian state news agency, the special control center of the Ukrainian National Space Agency deeply analyzed the seismic data caused by the underwater explosion near the leak point of the Beixi pipeline, and found that the explosion power was equivalent to about 700 kg of TNT equivalent. Recently, two "Beixi" natural gas pipelines in the Baltic Sea had multiple leakage points, and strong underwater explosions were detected in nearby waters. Russia, Sweden, Denmark and other countries have announced to start investigating relevant events. Sweden said that it was not ruled out that "foreign forces" had caused the incident. On the 28th local time, EU High Representative for Foreign and Security Policy Borrell said that the deliberate destruction of European energy infrastructure was totally unacceptable, and the EU would certainly give a strong response. NATO issued a statement on the leak of the Beixi natural gas pipeline on the 29th, saying that the pipeline had been "deliberately, recklessly and irresponsibly damaged". The General Procuratorate of the Russian Federation also issued a statement saying that it had filed a criminal case against the "international terrorism" suspected of damaging the "Beixi" pipeline, and the Russian Federal Security Agency launched a preliminary investigation accordingly. On the same day, the Russian side denied the statement that "Russia deliberately damaged the pipeline". "Beixi - 1" pipeline was completed in 2011, from Russia in the east to Germany in the west. The "Beixi - 2" pipeline built in 2021 has not been put into use yet, but some natural gas is stored inside. (Liu Xinshe)