A team of investigators with the U.S. National Transportation Safety Board on Monday recovered the second data recorder from the commuter train that derailed here over the weekend, leaving four people dead and more than 60 others hurt.

The first of the Metro-North train's two black boxes was found in the hours following the accident, which took place at 7:22 a.m. Sunday in the Bronx as the train was headed south from Poughkeepsie toward Grand Central Station.

The first data recorder should be in good condition and will help authorities determine the speed, the status of the brakes, the configuration of the accelerator and the position of the train at the moment of the accident, the NTSB's Earl Weener said.

Meanwhile, the Metropolitan Transportation Authority continues working to remove the derailed train cars from the crash site and repair the rails with an eye toward resuming traffic on the line as soon as possible.

Cranes have been delivered to the site of the accident, which occurred on a sharp curve at the confluence of the Hudson and Harlem rivers and they have already righted the locomotive and are in the process of dealing with the passenger cars.

A score of NTSB personnel were dispatched to the scene on Sunday afternoon.

New York state Gov. Andrew Cuomo pointed to excess speed as the possible cause of the accident.

However, authorities still have not made public the speed at which the train was traveling at the time of the derailment.

Train drivers must slow from 120 kph (70 mph) to 48 kph (30 mph) on the curve.

Sunday's accident was the MTA's worst since 1991, when five people died and more than 200 were injured in a derailment. EFE