(AP Photo/Mel Evans)
(AP Photo/Mel Evans)

An Amtrak train derails in Pennsylvania, leaving at least seven people dead and more than 200 injured.

(AP Photo/Matt Slocum)
(AP Photo/Matt Slocum)

LISTEN to FOX News Radio's special coverage of the Philadelphia Mayor's press conference Wednesday afternoon on the Amtrak train derailment: 

The NTSB held a news conference Wednesday evening giving an update as to their preliminary findings - listen to the NTSB news conference here: