Longtime NBC News journalist Tom Brokaw is pushing back hard at allegations by Linda Vester, a former network correspondent who said he sexually harassed her in the mid-1990s.

Brokaw sent a lengthy letter to colleagues Friday that disputes the accounts of Vester, 54, a Cincinnati native who told Variety and the Washington Post in stories published Thursday night that the former NBC Nightly News anchor made unwanted sexual advances toward her when they worked together at NBC in the 1990s.

In his letter, obtained by the Los Angeles Times, Brokaw described the stories as a “drive by shooting” by Vester, who had a grudge against NBC News because her career stalled at the division.

Vester alleged that Brokaw forcefully tried to kiss her in 1994 when she was staying at the Essex House Hotel in New York, where he showed up uninvited. A similar incident occurred in May 1995, she alleged, when Brokaw appeared unannounced at her apartment in London when she was assigned to the network’s bureau there.

Vester alleged that in both instances, Brokaw pressured her to have a sexual relationship with him. She said she feared that reporting them would hurt her career.

Brokaw issued a brief statement Thursday saying the incidents Vester described in her accounts did not happen, and on Friday, he issued a lengthy letter to colleagues that slammed her account.

“Linda Vester was given the run of the Washington Post and Variety to vent her grievances, to complain that I tickled her without permission (you read that right) that I invaded her hotel room, accepted an invitation to her apartment under false pretenses and in general was given a free hand to try to destroy all that I have achieved ...,” Brokaw wrote. “... My NBC colleagues are bewildered that Vester, who had limited success at NBC News, a modest career at Fox and a reputation as a colleague who had trouble with the truth was suddenly the keeper of the flame of journalistic integrity.”