Deborah Sherman, a reporter at KUSA, has been cut loose at the Denver NBC-affiliate because of a “personnel issue,” the Denver Post reports.

Sherman joined KUSA’s investigative reporting team in 2003. Her last day at the station was reportedly last week, though management has refused comment on the circumstances surrounding her departure.

“We’re not going to comment on people who are leaving or have left the station,” KUSA news director Patti Dennis said.

The Post reports Sherman “is said to have great contacts but not the easiest professional temperament,” saying a memo from station management to KUSA staffers fueled rumors that Sherman was shown the door due to her connection to several controversial stories she has reported on in the past.