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"&lt;img alt=\"Heavy D\" src=\"http://ll-media.tmz.com/2011/12/27/1227-heavyd-tmz-ex.jpg\" /&gt;&lt;strong&gt;&lt;br /&gt;Heavy D&lt;/strong&gt; died from a pulmonary embolism caused by deep leg vein thrombosis ... and a long flight back to L.A. from a Michael Jackson memorial concert may have been a contributing factor.&lt;br /&gt;&lt;br /&gt;A pulmonary embolism is a blockage of one or more arteries in the lungs -- most often caused by blood clots which travel in from other parts of he body. In Heavy's case, the clot was formed in his legs. &lt;br /&gt;&lt;br /&gt;Days before Heavy died, he was on a flight back from Europe, after performing at the Michael Jackson tribute concert in Wales.&lt;br /&gt;&lt;br /&gt;Officials from the L.A. County Coroner's Office say Heavy also suffered from heart disease, which could have been a contributing factor in his death. &lt;br /&gt;&lt;br /&gt;The Coroner's Office has classified the death as \"natural.\"&lt;br /&gt;&lt;br /&gt;As TMZ first reported, &lt;a href=\"http://www.tmz.com/2011/11/08/heavy-d-dead/\"&gt;&lt;strong&gt;Heavy died&lt;/strong&gt;&lt;/a&gt; on November 8, 2011. He was 44 years old. &lt;br /&gt;&lt;br /&gt;Deep leg vein thrombosis is often associated with long plane flights, in which a clot can form due to prolonged immobility.&amp;#160; &lt;br /&gt;&lt;br /&gt;&lt;em&gt;Story developing ... &lt;/em&gt;&lt;br /&gt;&lt;br /&gt;&lt;a href=\"http://www.tmz.com/photos/2011/11/08/4133-remembering-heavy-d\" target=\"_blank\"&gt;&lt;img src=\"http://ll-media.tmz.com/2011/11/09/1109-remembering-heavy-d-footer.jpg\" alt=\"1109_remembering_heavy_d_footer\" /&gt;&lt;/a&gt;&lt;br /&gt;&lt;!-- relatedlinks --&gt;"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.tmz.com/2011/12/27/heavy-d-pulmonary-embolism-died-cause-of-death/>