Michelle Fields needles Trump's former campaign manager
Fields, who parted ways with the right-leaning Breitbart News website after a run-in with Lewandowski, tweeted:
Lewandowski knocked Fields on Twitter as "delusional" and an "attention seeker" when she filed a police report and displayed bruises on her arm after the incident at a Trump event in March. Security footage released later showed Lewandowski taking hold of her arm after a press conference.
Trump's campaign denied the incident took place before the video was released.
Trump and his aides then argued that a misdemeanor charge was overblown. In April, authorities in Florida declined to prosecute Lewandowski on the battery charge.
Fields, who joined The Huffington Post in May to continue covering the Trump campaign, discussed the incident in her book.
Trump fiercely defended his embattled campaign manager, who had been at the helm of the billionaire's campaign since last year, for several weeks amid fallout from the Fields incident.
The New York Times reported Monday that Trump is parting ways with his top aide as the businessman braces for a difficult general election battle with likely Democratic opponent Hillary ClintonHillary Diane Rodham ClintonNevada Senate passes bill that would give Electoral College votes to winner of national popular vote 2020 Dems break political taboos by endorsing litmus tests Iowa Democrats brace for caucus turnout surge MORE.