Dick Clark -- famed TV producer, and "New Year's Rockin' Eve" host -- died from a massive heart attack this morning ... TMZ has learned.
Clark had been in St. John's hospital in L.A. after undergoing an outpatient procedure last night. Clark suffered the heart attack following the procedure -- attempts to resuscitate him were unsuccessful.
He was 82.
Details surrounding his death are unclear, but Clark had suffered a significant stroke in 2004 -- forcing him to retire from his hosting gig at "New Years' Rockin' Eve," which he created in 1972.