"On 15 September, Russian airspace control devices detected an air target approaching the Russian state border over neutral waters of the Baltic Sea", the statement says.
In order to identify an air target and prevent violation of the Russian state border, a Su-27 fighter from the Western Military District's air defence forces was scrambled.
"The crew of the Russian fighter approached the aerial object at a safe distance and identified it as a US Navy patrol aircraft P-8A Poseidon and escorted it over the Baltic Sea", the statement reads.
After the foreign military aircraft turned away from the Russian state border, the Russian fighter safely returned to the airfield. The entire flight of Russian fighter Su-27 was carried out in strict accordance with international rules for the use of airspace.
No violations of the Russian state border by the US plane were allowed, the NDCC added.
Moscow has warned that such regular flights by US and NATO aircraft near Russia's border poses the risk of accidental escalation.