In 2010 , Andrew Joseph Stack III deliberately crashed his Piper Cherokee PA-28 into Echelon 1 , an IRS building housing 190 employees . The resulting explosion killed 1 person ( excluding the pilot ) , injured 13 , and completely destroyed the building , costing the IRS a total of 38.6 million ( see 2010 Austin suicide attack )
2010 Austin suicide attack
2010 Austin suicide attack
Austin, Texas