Both Network Rail and Tramlink Nottingham, which runs Nottingham Express Transit (NET), said they were working with police to help with the investigation.

BBC: Tara (left) and Paige (right) Layton

The MTA operates New York City's subway and bus system as well as an extensive regional transit network stretching into the suburbs, including the Metro-North and Long Island Rail Roads and the Staten Island Railway.

WSJ: Prendergast Picked to Run MTA