OHMYGOSSIP — Matt Lauer is a nasty piece of work. According to a new Us Weekly report, it was he who got his TODAY co-host Ann Curry fired from the show.

“Matt Lauer is 100 percent behind Ann leaving,” a source said.

“They were really icy to each other, and she refused to speak to him all week.”

Curry — who joined the show in 1997 as news reader — left last week after just one year as co-host of NBC’s smash morning show, which has been suffering from flagging ratings.

“The body language was extremely tense,” said the source.