Tip leads police to John Lewis at homeless shelter in Philadelphia . Lewis is suspected in fatal shooting of Miami Rescue Mission . Charles Cassidy . E-mail to a friend . Cassidy walked in on doughnut shop robbery 2007 and was shot , police say . Miami police alerted Miami counterparts that Charles Cassidy was headed that way .
Tip leads police to John Lewis at homeless shelter in Philadelphia . Lewis is suspected in fatal shooting of Miami Rescue Mission . Charles Cassidy . Cassidy walked in on doughnut shop robbery 2007 and was shot , police say . Miami police alerted Miami counterparts that Charles Cassidy was headed that way .