The following is from WWE.com:
BOSTON – As reported earlier today on WWE.com, at approximately 3 a.m. this morning,was found in the stairwell of his Boston hotel and rushed to a local emergency room.
WWE Senior Vice President of Talent Relations, John Laurinaitis has been in contact with Jeff, who has been released from the hospital. Laurinaitis is investigating the incident. It is questionable as to whether or not Jeff Hardy will perform tonight.