Video Footage Shows Amtrak Train Speeding Up Before Derailment [WATCH]

In Tuesday's fatal Amtrak derailment at 9:30 p.m. in Philidelphia, eight were killed and over 200 passengers were sent to surrounding hospitals with injuries. New information shows that the train was accelerating at a hurried 106 mph around a curve at the time of the crash.

Concerns have surrounded the train's speed around the bend, wondering if there was a mechanical failure, a fault in the track or if the engineer was to blame. Amtrak engineer 32-year-old Brandon Bostian of New York agreed to a National Transpiration Safety Board interview. The engineer who also suffered injuries in Amtrak's ninth crash this year, reports the Federal Railroad Administration, is allowed to have his lawyer present.

"What I believe is a very good way to interview people is, honestly, to not ask them questions, to basically give them a figurative blank sheet of paper and ask them what they recall," board member Robert Sumwalt said Thursday. "Really, we want to know his account of what he recalls leading into this tragic accident."

A "good quality video" captured the fatal crash which was on its way to New York from Washington D.C., which shows the train speeding up to twice the 50-mph speed limit as it approached a curve in the tracks. The cause of derailment remains unknown. "It just shows the speed alone," Sumwalt said. "It doesn't tell how the speed got there."

Bostian's lawyer Robert Goggin told Good Morning America that his client lost consciousness during the crash and "has absolutely no recollection whatsoever" of what occurred at the time of the accident. Goggin believes Bostian's memory will jog as he recuperates from a concussion, 15 staples in his head and one leg — the other leg is immobilized.

"He remembers coming into the curve (and) attempting to reduce speed," attorney Robert Goggin said. "The last thing he recalls is coming to, looking for his bag, getting his cell phone, turning it on and calling 911." Goggin vowed that Bostian was not guilty of texting or making a phone call prior to the 911 emergency call and has never been known to execute curious behavior. A blood test was voluntarily taken and proved that "no drinking, no drugs, no medical conditions" showed up.

The eight who lost their lives in the derailment included the dean of student affairs for New York Medgar Evers College Derrick Griffith, U.S. Naval Academy Midshipman Justin Zemser and Associated Press video software architect Jim Gaines, notes CNN.

"I want to express my gratitude for the first responders, who raced to save lives, and for the many passengers who, despite their own injuries, made heroic efforts to get fellow passengers to safety," President Barack Obama said Thursday.

Many still question whether or not the rail foundation is acceptable. Matthew L. Wald, transportation analyst, called it "an extremely heavily used stretch of track." Aside from the condition of the track, it lacked positive train control, the automated speed control system that potentially could have prevented the accident.