Officials said at least 12 people were injured in the collision, while the MMTS driver was reportedly trapped inside a mangled train cabin for up to eight hours before being pulled from the wreckage.
The LIRR urged customers to find alternate routes after service was suspended on the Ronkonkoma and Huntington/Port Jefferson branches.
The victim later died in hospital from wounds suffered in the collision.
All of those killed were under 10 years of age.
The engineer "does recall entering into the station and controlling the speed of the train,"
Investigators are searching for the cause of a train crash in the Hoboken, New Jersey station that killed one and injured more than 100.
Casualties were two members of a maintenance crew; 35 hospitalized with injuries.
Train struck a backhoe in Chester, Pa; service suspended between Philly and Wilmington, Delaware.
The crane operator escaped unharmed by leaping away and has been detained by police for questioning.
Ten people were killed and more than 80 were injured in the crash.
The lawsuit, filed in Philadelphia, cited "serious and disabling" injuries from the May 12 derailment that killed eight people and injured more than 200 others.
Positive train control (PTC) automatically slows or even halts trains that are moving too fast or heading into a danger zone.
The Metro-North commuter train struck a car about an hour north of New York City Tuesday evening, with the MTA reporting "numerous confirmed fatalities."
The train crashed into a ravine after derailing due to a mudslide, 50km west of St. Moritz