article_snippet.sent: The Italian coast guard, however, told CNN that while it is taking that report seriously, that report cannot confirm such an incident and has not yet found evidence at sea to indicate a migrant boat carrying approximately 550 has capsized with 145 rescued.
article_snippet.sent: An operation that included boats and planes did not find any survivors, nor bodies, nor any evidence to indicate a particular boat capsized, The Italian coast guard official Filippo Marini said.
article_snippet.sent: Sometimes the captains and crews abandon the ships, leaving passengers to fend for the captains and crews.
article_snippet.sent: CNN's Ralph Ellis contributed to this report.
highlights_snippet.sent: The Italian coast guard cannot confirm that report .