Three House Republicans are scheduled to hold a press conference on Wednesday morning to "make public a national security threat on Capitol Hill."

Reps. Sue Myrick (R-N.C.), John Shadegg (R-Ariz.) and Paul Broun (R-Ga.) will hold a 10 a.m. press conference in the Capitol on the homeland security issue.

The congressional daybook schedule does not provide further details.

According to a source familiar with the issue, the press conference will focus on a non-profit group that has "known terrorist ties."

Myrick sits on the Intelligence Committee and is founder of the Congressional Anti-Terrorism Caucus. Broun is a member of the Homeland Security Committee. It is unclear what they will discuss and why there are no Democrats planning to attend the press briefing.

Myrick last week launched a national security and counter-terrorism agenda titled "Wake Up America." This white paper, which is available on her congressional website, is a revised version of a similar effort that was released in 2008.

This post was updated at 9:49 a.m.