White powder sent to offices of Alaskan politicians

Packages filled with an unknown white powder that were sent to the Alaska offices of Sen. Lisa Murkowski, Sen. Mark Begich and Rep. Don Young on Tuesday, leading to a building evacuation and heightened security.
Eric Gonzales, the Alaska spokesman for the FBI, said that while the bundles were "poorly packaged," they were harmless and weren't meant to be threatening, the Fairbanks Daily News Miner reports.
“There was absolutely no criminal malice behind these packages,” Gonzales said, according to the Fairbanks Daily News Miner.
Young said in a statement that his office had been notified by the FBI that the packages contained a mixture of concrete. A spokeswoman for Begich said that an aide in the Fairbanks, Ala., office opened an express mail package from Arizona Tuesday morning and saw a white powder spurt out. The package was opened inside a plastic bag as a safety measure and there was no indication that the aide was in danger. The aide was quarantined during the afternoon, taken to the hospital and released later that evening.
A similar package was discovered in Murkowski's Fairbanks office but it was not opened. The Federal Protective Service seized the item, the Fairbanks Daily News Miner reports.
The Federal Building in Fairbanks was emptied soon after the package was discovered and Peterson Towers in Anchorage has been tightly monitored since the incident.
Congressional offices have been on alert for packages that contain powdery substances for the last decade after the offices of two U.S. senators were targeted with powdered anthrax in 2001. Five people died in the anthrax incidents at that time.