Elon Musk said on Thursday he has found a new chief executive for Twitter, but did not name the person, while the Wall Street Journal reported that Comcast (CMCSA.O) NBCUniversal executive Linda Yaccarino was in talks for the job.

Musk said in a tweet: "Excited to announce that I've hired a new CEO for X/Twitter. She will be starting in ~6 weeks!"

Musk, who took over as CEO of Twitter when he completed his $44 billion purchase of the company in October, said in December that he would step aside as CEO once he found "someone foolish enough to take the job." He said that he would then run Twitter's software and servers teams.

The WSJ cited people familiar with the situation in saying that Yaccarino was in talks for the top post.

Reuters reported after Musk's tweet that Yaccarino could be his choice to lead Twitter, according to a Silicon Valley executive and a former Hollywood executive who spoke on condition of anonymity.

Yaccarino, the top advertising sales executive at NBCUniversal, interviewed Musk at an advertising conference in Miami last month.

At the conference, Yaccarino encouraged the audience to welcome Musk with applause and lauded his work ethic.

"Many of you in this room know me, and you know I pride myself on my work ethic," she said, adding, "Buddy, I met my match."

Yaccarino joined NBCU in 2011, after 15 years at Turner Entertainment and has been credited with dragging the network's ad sales operation into the digital future.

As broadcast television audiences migrated to streaming, she took to the stage at Radio City Music Hall last year to tell advertisers that their brand messages were not an afterthought.

Yaccarino did not respond to calls seeking comment on Thursday.

When asked for comment, an NBCUniversal spokesperson said, "Linda is in back-to-back rehearsals for the Upfront," referring to a presentation NBCUniversal will host for advertisers in New York on Monday.

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