Polish zapper

The Register reports (claims to be from the Telegraph but no link given):

A Polish teenager allegedly turned the tram system in the city of Lodz into his own personal train set, triggering chaos and derailing four vehicles in the process. Twelve people were injured in one of the incidents.

The 14-year-old modified a TV remote control so that it could be used to change track points, The Telegraph reports. Local police said the youngster trespassed in tram depots to gather information needed to build the device. The teenager told police that he modified track setting for a prank.

"He studied the trams and the tracks for a long time and then built a device that looked like a TV remote control and used it to manoeuvre the trams and the tracks," said Miroslaw Micor, a spokesman for Lodz police.