article_snippet.sent: Its navy said Its navy noticed an underwater target yesterday and again this morning and fired some warning charges the size of grenades.
article_snippet.sent: Border patrol boats first identified an underwater target yesterday, before detecting it again early this morning and dropping 'warning' depth charges .
article_snippet.sent: A second detection was then made early this morning after its navy began searching for the object, and underwater depth charges were fired at 3am.
article_snippet.sent: Commodore Olavi Jantunen told Helsingin Sanomat newspaper: 'The bombs are not intended to damage a 'possible underwater target' within territorial waters, the purpose is to let a 'possible underwater target' within territorial waters know that the purpose has been noticed.'
highlights_snippet.sent: charges on a possible submarine were warning shots, about the size of hand grenades .
  