08/20/2011 04:33 pm ET Updated Oct 20, 2011

Man Attempts Suicide At Sen. Mark Kirk's Office, Made Threat Against Obama: Police

A man is in federal protective custody Saturday after allegedly walking into U.S. Sen. Mark Kirk's downtown Chicago office and attempting suicide, and also making threats against President Barack Obama.

According to WLS Chicago, a man walked into Kirk's office at the Kluczynski Federal Building just after 3 p.m. Friday, broke a window and threatened to jump from the 35th floor.

“Officers with the Federal Protective Service (FPS) today responded to a distress alarm from the Chicago office of U.S. Sen. Mark Kirk and apprehended an individual who was making threatening statements,” Chris Ortman, a Homeland Security spokesman, told the Chicago Sun-Times. “The suspect is being treated for injuries at Northwestern [Memorial] Hospital.”

A source also told the Sun-Times that the man made a threat against President Obama.

A Kirk spokesman told NBC Chicago that the senator was on naval duty when the incident occurred. It was unclear whether the man made any threats or statements against the Republican senator.

The FBI is investigating the incident.