The Secret Service is aware of a since-deleted tweet posted Monday by Peter Fonda in which he suggested that President Donald Trump's youngest son should be taken from the family and put "in a cage," federal authorities told The Hollywood Reporter. It is unclear if an investigation has been opened as the Secret Service does not comment on "protective intelligence." However, it is common knowledge the agency investigates perceived threats made to the president and first family. The Easy Rider actor sent his tweet seemingly out of anger over children being separated from their parents at the U.S.-Mexico border as part of the administration's "zero tolerance" policy.

In all caps, Fonda tweeted, "WE SHOULD RIP BARRON TRUMP FROM HIS MOTHER’S ARMS AND PUT HIM IN A CAGE WITH PEDOPHILES AND SEE IF MOTHER WILL WILL STAND UP AGAINST THE GIANT ASSHOLE SHE IS MARRIED TO. 90 MILLION PEOPLE IN THE STREETS ON THE SAME WEEKEND IN THE COUNTRY. FUCK." Stephanie Grisham, spokeswoman for the first lady, said "The tweet was sick and irresponsible and USSS was notified." Around 1:30 p.m., Fonda issued an apology for the tweet.

"I tweeted something highly inappropriate and vulgar about the president and his family in response to the devastating images I was seeing on television," he began. "Like many Americans, I am very impassioned and distraught over the situation with children separated from their families at the border, but I went way too far. It was wrong and I should not have done it. I immediately regretted it and sincerely apologize to the family for what I said and any hurt my words have caused.” Fonda also encouraged people to protest in order to stop Trump and his policies. "Wanna stop this fucking monster? Really wanna stop this giant asshole? 90 MILLION PEOPLE IN THE STREETS ON THE SAME WEEKEND! THESE REPUBLICAN ASSHOLES ARE ALL IN ON IT! THE CHIEF ASSHOLE IS HAPPY WE ARE ALL VERY UPSET. WE HAVE TO GET EVEN MORE ANGRY WITH THESE REPUBLICANS," Fonda tweeted. "It’s more than a protest! 90 million people in the streets on the same weekend works. I can’t be the organizer for they’ll arrest me for conspiracy to commit sedition. This must be like a spontaneous event without seeming to be organized by me and we have to make this happen NOW," he added.