Notre Dame linebacker Manti Te'o walks off the field following a game against Wake Forest in South Bend, Ind. A story that Te'o's girlfriend had died of leukemia was dismissed by the university Wednesday as a hoax perpetrated against him.

SOUTH BEND, Ind. — The wrenching story of Notre Dame football star Manti Te’o’s girlfriend dying of leukemia — a loss he said inspired him to play his best all the way to the BCS championship game — was dismissed by the school Wednesday as a hoax perpetrated against the linebacker.

Notre Dame said it believes the Heisman Trophy finalist was duped into an online relationship with a woman whose “death” was then faked by the perpetrators of the hoax.

The school made the statement following a lengthy story by Deadspin.com, saying it could find no record that Lennay Kekua ever existed. The website story suggests a friend of Te’o may have carried out the hoax and that the football player may have been in on it — a stunning claim against a widely admired All-American who led the most famed program in college football back to the national championship game for the first time since 1988.

“This is incredibly embarrassing to talk about, but over an extended period of time, I developed an emotional relationship with a woman I met online,” Te’o said in a statement. “We maintained what I thought to be an authentic relationship by communicating frequently online and on the phone, and I grew to care deeply about her.”

However, he stopped short of saying he had ever met her in person or correcting reports that said he had, though he did on numerous occasions talk about how special the relationship was to him.

“To realize that I was the victim of what was apparently someone’s sick joke and constant lies was, and is, painful and humiliating,” he said.

“In retrospect, I obviously should have been much more cautious. If anything good comes of this, I hope it is that others will be far more guarded when they engage with people online than I was.”

Word of the hoax spread quickly and raised questions about whether the school somehow played a role in pushing the tale. Te’o’s grandmother died during the season and the apparent double tragedy fueled stories about Te’o’s perseverance and leadership.

Notre Dame athletic director Jack Swarbrick said at a news conference Wednesday night that Te’o told coaches on Dec. 26 he had received a call from Kekua’s phone number while at an awards ceremony during the first week of December.

“When he answered it, it was a person whose voice sounded like the same person he had talked to, who told him that she was, in fact, not dead. Manti was very unnerved by that, as you might imagine,” Swarbrick said.

Swarbrick said the school hired investigators and their report indicated those behind the hoax were in contact with each other, discussing what they were doing.

The investigators “were able to discover online chatter among the perpetrators that was certainly the ultimate proof of this, the joy they were taking,” Swarbrick said. “The casualness among themselves they were talking about what they accomplished.”

Swarbrick said for Te’o “the pain was real.”