President Ferdinand Marcos Jr. said on Monday the reported presence of a Russian submarine in the Philippine's exclusive economic zone (EEZ) in the South China Sea was "very worrisome". The Philippine Daily Inquirer newspaper reported on Monday that a Russian attack submarine surfaced inside Manila's EEZ last week,

Philippine President Ferdinand Marcos on Monday described as "very worrisome" the presence of a Russian attack submarine off the country's coast in the disputed South China Sea.

A Russian attack submarine was recently spotted in Philippine waters in a development which President Ferdinand Marcos Jr. said was “worrisome.”