The government announced Friday that four major airlines—Delta, American, Southwest and JetBlue—may have temporarily raised ticket prices to take advantage of the May Amtrak crash that left eight people dead and hundreds injured.

The FBI will investigate the possibility that the windshield of the Amtrak train that derailed this week was struck by some kind of projectile before it crashed, the Associated Press reports.

Authorities reportedly discovered another body in the rubble of the Amtrak crash site in Philadelphia this morning, bringing the death toll from the accident to eight. Eleven passengers reportedly remain missing (UPDATE: Philadelphia mayor Michael Nutter says that all 243 passengers on board have been accounted for).

According to sources who spoke with NBC News, the Amtrak train that derailed last night in Philadelphia was traveling more than 100 mph when it crashed at a curve where the speed limit is just 50 mph.