A few minutes after Donald J. Trump took the inaugural oath to become our 45th president of the United States, Saturday Night Live writer Katie Rich mocked the president’s youngest child, writing on Twitter that 10-year-old “Barron will be this country’s first homeschool shooter.”

By Saturday, Rich was gone from the SNL writing credits.

And Monday, a person familiar with the situation told The Comic’s Comic that Rich had been suspended from her job indefinitely.

After reports that Rich had deleted her Twitter account entirely, she posted an apology this afternoon. She wrote: “I sincerely apologize for the insensitive tweet. I deeply regret my actions & offensive words. It was inexcusable & I’m so sorry.”

Rich joined SNL as a writer in 2013, having previously worked/performed with cast member Cecily Strong in Chicago with The Second City. Rich wrote for Weekend Update.

She also performed on FOX Sports 1’s Garbage Time comedy special in 2015 from The Comic Strip.