PHOTOS: White flags mysteriously fly above Brooklyn Bridge

BROOKLYN -- Two large American flags atop the Brooklyn Bridge -- one of New York City's most heavily secured landmarks -- were replaced sometime during the night with white banners that were spotted Tuesday morning fluttering in the wind.

Police crime scene and intelligence detectives were investigating how the flags were switched out on the famed span that connects Brooklyn and Manhattan, and there were no reports of suspicious activity, police said. Check out photos of the mysterious flags above and read the full story here.