Although there are no details to go on at the moment, Ultimate Warrior has passed away at the age of 54, according to a tweet from Triple H just a short time ago.
Saddened to announce the passing of the Ultimate Warrior. Icon and friend. My sympathy to his wife Dana and his daughters— Triple H (@TripleH) April 9, 2014
Warrior was just inducted into the WWE Hall of Fame this past Sat., April 5, 2014, in New Orleans. He then made an appearance at WrestleMania 30 before coming back to Monday Night Raw just last night for a brief segment.
We'll have more on this soon.
Update: WWE confirmed the news in a statement:
WWE is shocked and deeply saddened to learn of the passing of one of the most iconic WWE Superstars ever, The Ultimate Warrior. Warrior began his WWE career in 1987 and quickly went on to become one of the biggest stars in WWE history. Warrior became WWE Champion at WrestleMania VI, defeating Hulk Hogan in an epic encounter. We are grateful that just days ago, Warrior had the opportunity to take his rightful place in the WWE Hall of Fame and was also able to appear at WrestleMania 30 and Monday Night Raw to address his legions of fans. WWE sends its sincere condolences to Warrior's family, friends and fans. Warrior was 54 and is survived by his wife Dana and his two daughters.