The Amtrak train that derailed in Washington state on Monday — killing at least three people and injuring scores — reportedly was speeding toward a curve before the deadly crash.

Amtrak 501 from Seattle to Portland, which carried 77 passengers and seven crew members, was traveling at 81.1 mph a quarter-mile before it jumped the tracks, data compiled by the train-tracking website Transitdocs.com showed.

The speed limit on most of the train’s route is 79 mph, but drops to just 30 mph on the curve where it derailed, the Seattle Times reported.

“I noticed it was going really fast. I’d never seen a train going that fast in the past. I drive that stretch every day,” Daniel Konzelman told the paper.

The train crashed near Lacey, east of the state capital of Olympia, shortly before 7:45 a.m. local time, with officials saying the first 13 of its 14 cars derailed.

Amtrak’s assistant superintendent of operations told the Seattle Times it was too soon to say how fast the train was going when it derailed.

“It’s being investigated by the NTSB and anything beyond that, until their findings are out, is pure speculation,” Banks Olson told the paper.