Have you seen this thug? Cops seek weapon-wielding subway punk

<script src='http://www.nydailynews.com/js/AC_RunActiveContent.js' type='text/javascript'></script><script type='text/javascript'>AC_FL_RunContent('codebase','http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=9,0,28,0','width','485','height','350','title','Video Player','src','http://www.nydailynews.com/swf/video_player/vp_485_single_06092010', 'FlashVars', 'embedCode=9sNGFkMjqn0N0PlcMAzGTJ9ceFYxir4-', 'quality','high', 'play', 'true', 'loop', 'true', 'allowFullScreen', 'true', 'pluginspage','http://www.adobe.com/shockwave/download/download.cgi?P1_Prod_Version=ShockwaveFlash','movie','http://www.nydailynews.com/swf/video_player/vp_485_single_06092010' );</script><noscript><object classid='clsid:D27CDB6E-AE6D-11cf-96B8-444553540000' codebase='http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=9,0,28,0' width='485' height='350' title='Video Player'> <param name='movie' value='http://www.nydailynews.com/swf/video_player/vp_485_single_06092010.swf' /> <param name='quality' value='high' /> <param name='flashvars' value='embedCode=9sNGFkMjqn0N0PlcMAzGTJ9ceFYxir4-' /> <embed src='http://www.nydailynews.com/swf/video_player/vp_485_single_06092010.swf' quality='high' flashvars='embedCode=9sNGFkMjqn0N0PlcMAzGTJ9ceFYxir4-' pluginspage='http://www.adobe.com/shockwave/download/download.cgi?P1_Prod_Version=ShockwaveFlash' allowFullScreen='true' type='application/x-shockwave-flash' width='485' height='350'></embed></object></noscript><p>A punk often brandishing a gun or knife has been preying on teens in the Manhattan subway and cops are appealing to the public for tips.