Washington (CNN) - A frozen pig's foot and a note laced with anti-Semitic rants were sent to Rep. Peter King's Capitol Hill office, a congressional source familiar with the situation confirmed to CNN Monday.
The source said the note included statements such as "evil Jews will return this hoof to Palestine." Neither King nor his aides have seen the package, the source said, because all mail sent to the U.S. Capitol is now screened and the package was intercepted before it went to his office. King's office was notified Monday afternoon.
There was no direct threat to the congressman and law enforcement officials know who sent the package, the source said.
King - a New York Republican - is chairman of the House Homeland Security Committee and had already had stepped up security around controversial hearings last month on Muslim radicalization in America. King has had increased security for months while home in his district. Last month King told CNN it was because of "threat assessments" done by law enforcement.
A spokeswoman for the U.S. Capitol Police told CNN: "We have an active open investigation regarding this incident and are working with postal inspectors. I can't confirm the contents of the package."
- CNN's Deirdre Walsh and Carol Cratty contributed to this report