Richard Holbrooke, the U.S. special envoy to Afghanistan and Pakistan, was taken to a Washington hospital Friday after falling ill at the State Department.

"All I can tell you is that the ambassador is at the hospital at the present time and — and, you know, beyond that ... we'll let you know as we find out more," State Department spokesman P.J. Crowley told reporters.

Crowley said Holbrooke fell ill in the morning on the seventh floor of the Foggy Bottom headquarters where Secretary of State Hillary ClintonHillary Rodham ClintonLawmakers targeted as district politics shift Want a tremendous deal on infrastructure spending? Suspend Davis-Bacon Constitutional amendment could vastly improve campaign finance MORE's office is located.

Holbrooke has spent much of the past two years shuttling back and forth between the U.S. and the war-torn region on behalf of President Obama.