The remains of the plane's pilot – believed to be Joseph Andrew Stack – have been recovered. Austin Police Chief Art Acevedo calls the attack "a criminal act by a lone individual."
Thousands of civilian aircraft fly within the general aviation system every day. But there are few regulations, laws, or security procedures that would prevent a pilot with ill intentions from using a plane for evil purposes.
The pilot of a plane that authorities say targeted an IRS office in Austin, Texas, left an apparent suicide note citing a Big Brother tax code. At least at first glance, Joe Stack's views fit more into a pattern of solo attackers avenging personal beefs than a terror conspiracy.
Joseph Andrew Stack, the software engineer being linked to Thursday's plane crash in Austin, left behind an anti-IRS, antigovernment Web manifesto.
Witnesses say the single-engine plane appeared to accelerate before crashing into the seven-story building, where IRS employees, among others, worked.
You think you've got a novel way to avoid taxes this year? The IRS is not amused.
On Friday, Obama is set to announce tax credits for employers, with the aim of encouraging businesses to hire. Congress would have to vote on the proposal.
Money given for Haiti earthquake disaster relief through March 1 can be written off on taxes for 2009, the IRS says.
Government officials kicked off a $130 million campaign Monday to encourage public awareness of Census 2010.