Here is the link
http://www.denverpost.com/ci_4934372
And here is a relevent snippet from the article:
People piled into Williams' limo, which headed south on Broadway before turning north on Speer. As Williams' limo was approaching 11th Avenue, a sport utility vehicle passed by on the left and opened fire. Police later marked 14 bullet holes on the driver's side, not including the rear-door window that was shot out.