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Ludacris is mourning the loss of his "Fast & Furious" co-star Paul Walker.  Walker and his friend and business partner Roger Rodas were killed in a single car crash Saturday afternoon in Santa Clarita, California. 

On Instagram Luda addressed Paul directly, writing "your humble spirit was felt from the start, wherever you blessed your presence you always left a mark."  The rapper and actor also acknowledged his close friendship with Walker by saying that he and Paul "were like brothers."  He even pointed out that their birthdays are only one day apart.  Ludacris added that Paul's "legacy will live on forever."  

Luda isn't the only hip-hop icon to express his shock and sadness at the news of Paul Walker's death.  On Twitter T.I., who starred alongside Walker in the 2010 film "Takers," wrote:

Rapper The Game called Walker "a great friend," adding that his death is a "reminder of how short life is."  

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