This building is supposed to house the IRS. I can't find anything else yet.
http://kgnb.am/breaking-news-reported-plane-crash-into-austin-building/BREAKING NEWS: Reported Plane Crash Into Northwest Austin Building – Firefighting Efforts/Triage Continue
From the Austin American Statesman: Austin police say a plane has crashed into a building in the 9400 block or Research Boulevard. Austin-Travis County EMS Assistant Director James Shamard said smoke is visible for at least a mile and that paramedics have set up a triage center at the scene. “We have no idea right now if there are any patients, or how many.” EMS officials said it was a seven-story building and that two people were unaccounted for. Tucker Thurman was driving to work on the U.S. 183 flyover near MoPac Boulevard (Loop 1) when he said he saw a small plane, very low, flying over the highway. He said he saw it then bank heavily to the right before heading into the building. “There was a huge fireball. It right into the building,” Thurman said. EMS officials said they have taken at least two patients to the hospital, but that there are several “walking wounded” at the scene. Fire Chief Rhoda Mae Kerr said that the department has gone into a “defensive position,” meaning that firefighters have been ordered to retreat from the building because of the danger. Fire department officials said EMS has begun taking people to University Medical Center Brackenridge.
http://www.statesman.com/blogs/content/shared-gen/blogs/austin/blotter/entries/2010/02/18/report_plane_has_crashed_into.html?cxntcid=breaking_newsThursday, February 18, 2010, 10:05 AM
Authorities are investigating a reported plane crash into a seven-story office building in the 9400 block of Research Boulevard, according to Austin fire officials. No other information is immediately available.
See live streaming video of the plane crash at Statesman traffic camera:
