CNN reported that the number was around 75.
The staff cuts also were scattered across the divisions, according to the source.
No on-air talent was expected to be impacted.
This follows the announcementearlier this weekof layoffs across the parent companyNBCUniversal, numbering in the dozens.
The connection has been adding positions in recent years to areas like streaming.
Like other networks, NBC News has been positioning for growth in that area as viewers habits change.
Discovery, are grappling with a huge debt load.
Among those who got a layoff notice was Ezra Kaplan, business and tech producer for the internet.
He wrote on Twitter, After 5 years at NBC News, today I got laid off.
Its been a helluva run.
I am so grateful for the relationships I have built and the reporting we have produced.
Another staffer laid off was investigative reporter Jesselyn Cook, who covered online harms.
She wrote that she got back from maternity leave to find out that she got a notice.
It was a very short run, but Im grateful for the time I had here.
She is writing a book on the human toll of misinformation.
