PORTLAND, Ore. -- Multnomah County Sheriff Dan Staton insists a negative report from an analyst on use of force in the jails had nothing to do with the woman losing her job.

"No. Matter of fact I had very little contact with her departure from the office,” said Staton.

Amanda Lamb is an analyst who studied the use of force. She found 40 percent of use-of-force incidents involved black inmates, even though they only make up 23 percent of the jail population.

The sheriff says there is no connection.

“The report came out on September 14 -- she was notified she was losing her position on September 1. So that was before the report came out. Now I didn’t have knowledge of the existence of this report until about two-and-a-half weeks ago,” Staton said.

Lamb disagrees.

“I presented the findings within the report and, shortly thereafter, was told my job with the sheriff’s office was ending,” she wrote in a statement.

“I’m not sure that I agree with the sheriff’s assertion that my departure was unrelated to this report,” she concluded.

And one of the Sheriff’s former lieutenants said he briefed Staton last August on the report and it findings.

“He knew, he knew very well about it ‘cause we gave it to him that day,” said Brent Ritchie.

Shea Marshman, the former Director of Planning and Research at the sheriff’s office, backs Ritchie up.

“After meeting with him he (Ritchie) came to my office and said okay, I just met with the sheriff and I gave him the report. I showed it to him and we discussed the contents of it and he actually read it,” Marshman recalled.

But another lieutenant who was in the meeting remembers it being very brief.

“I wouldn’t describe it as a full briefing. I kept the copies of the report because this is still a research report that is still very much in progress,” said Lt. Harry Smith.

More top stories:

Kalamazoo rampage: What we know now

Wildflower 'super bloom' transforms Death Valley

Photos: Costumes of Wizard World Comic Con in Portland

Watch: Rescued eagle released on Portland waterfront

Follow us on Facebook for the latest breaking news updates

Get news, weather & traffic updates on the go with the KGW News app