Missouri state senator declares, 'I hope Trump is assassinated!' Now the Secret Service is involved.

Missouri Democratic state Sen. Maria Chappelle-Nadal posted and later deleted a Facebook comment Thursday, stating she hopes President Donald Trump is assassinated, according to the St. Louis Post-Dispatch.

Chappelle-Nadal, 42, readily admitted that she authored the comment, which was in response to another commenter who was complaining about Trump.

"I didn't mean what I put up. Absolutely not. I was very frustrated," Chappelle-Nada told the Post-Dispatch. "Things have got to change."

Several Missouri lawmakers have called for Chappelle-Nadal to resign as a result of the comment, including U.S. Sen. Claire McCaskill (D) and Stephen Webber, the chairman of the Missouri Democratic Party.

"All sides need to agree that there is no room for suggestions of political violence in America — and the Missouri Democratic Party will absolutely not tolerate calls for the assassination of the President," Webber said in a statement. "I believe she should resign.”

The St. Louis field office of the U.S. Secret Service confirmed they were investigating the post so that agents can confirm whether there was any intent behind the post and whether it violated federal law.

The state senator cited frustration over the violent protests in Charlottesville, Virginia, over the weekend, as well as with Trump's response as the reasons for the comment.

In remarks following the deletion of the Facebook comment, Chappelle-Nadal expressed regret over the comment but did not explicitly apologize. Instead, she urged the public to focus its attention on more pressing issues, referring to the threat posed by white supremacists.

"I put that up on my personal Facebook and I should not have," Chappelle-Nadal said. "It was in response to the concerns that I am hearing from residents of St. Louis. I have deleted it, and it should have been deleted, but there is something way more important that we should be talking about."

Missouri Senate Democratic Caucus leader Sen. Gina Walsh condemned Chappelle-Nadal's comment, saying the state senator should be "ashamed of herself for adding her voice to this toxic environment."

"Promoting, supporting or suggesting violence against anyone, especially our elected leaders, is never acceptable," Walsh said.

Chappelle-Nadal has held her Senate seat since 2010 and is also a director on the University City, Missouri, school board. Before being elected to state Senate, she served three terms in the Missouri House of Representatives.

She's been in the news before for social media activity. Chappelle-Nadal was vocal during the riots in Ferguson, Missouri, following the police killing of Mike Brown. Ferguson is in the 14th District, which she serves in.