(CNN) — The latest news as it comes in to CNN from the scene of the crash of a small plane in Austin, Texas. (All times are ET, one hour ahead of local Austin time.)
1:47 p.m.: A message on a Web site registered to Stack appears to be a suicide note: “If you’re reading this, you’re no doubt asking yourself, ‘Why did this have to happen?'” the message says. “The simple truth is that it is complicated and has been coming for a long time.” In the long message, the writer rails against the government and, particularly, the Internal Revenue Service.
1:43 p.m. A federal law enforcement official confirmed the name Joseph Andrew Stack and said he owned a house that was burned Thursday. Asked whether Stack set the fire, the official replied, “It appears that way.”
1:40 p.m. The official said the plane was a Piper and that officials believe Stack owned it. Initially there was confusion that the plane was stolen, but the official said that officials no longer believe that is true. Asked whether it was suicide, the official said “it looks like it.”
1:19 p.m.: FAA officials tell CNN the plane was a Piper Cherokee PA-28. Earlier reports of the plane’s make were incorrect.
1:18 p.m.: A federal law enforcement official told CNN that they believed the plane belonged to Stack.
1:03 p.m.: Department of Homeland security spokesman Matt Chandler revises an earlier statement, saying there is “no reason to believe there is a nexus to terrorist activity.” He had said there was, as of that time, no indication of criminal activity, either.
12:49 p.m.: The Internal Revenue Service in Dallas, Texas, told CNN that the building is a federal IRS outsourced building. It said 199 of its employees work there. The IRS said it thinks all employees are accounted for, but they are checking.
12:40 p.m.: Federal officials said two F-16 fighter jets were launched as a precaution after the crash, though terrorist intent was not indicated.
12:32 p.m.: The FAA said the plane departed Georgetown Municipal Airport, north of Austin, about 9:40 a.m., and that the pilot did not file a flight plan.
12:18 p.m.: Witnesses described an infernal scene that shook nearby buildings and sent fire and smoke bellowing into the sky. “I just saw smoke and flames,” said CNN iReporter Mike Ernest. “I could not believe what I was seeing. It was just smoke and flames everywhere.”
12:11 p.m.: Harry Evans of the Austin Fire Department said firefighters found “heavy fire destruction in and around the second floor … lots of heat, lots of smoke, lots of fire.”
12:05 p.m.: Two people were transported from the crash site to University Medical Center Brackenridge, said hospital spokeswoman Matilda Sanchez. She could not provide additional information. University Medical Center Brackenridge is the only Level 1 trauma center for adults in Austin.
12:03 p.m.: Cynthia Reed, who works in the building next to the one hit, told CNN she saw people who apparently were trapped. “They were hanging out the windows, screaming for help,” she said.
11:44 a.m.: Firefighters used two ladder trucks and other equipment to hose down the blaze at the building, which police said was located in the 9400 block of Research Boulevard. Traffic on Southbound U.S. 183, which is adjacent to the crash site, started to snarl as black smoke poured out of the seven-story building.
11:36 a.m.: A small airplane crashed into a building in Austin, Texas, Thursday morning, according to Lynn Lundsford of the Federal Aviation Administration.