MOSCOW (AP) — Russian investigators say they have detained two employees of the Moscow subway where 22 people died and more than a hundred were injured in a train derailment.

The Investigative Committee says it's detained the head of the track department and his deputy. Investigators say new rail switch at the point where the train left the tracks was not properly installed during repair works in May and was in fact attached to the rail by a single wire.

The rush-hour accident on Tuesday killed 22 people and hurt 136. More than 1,100 people were evacuated from the train, which was stuck between two stations in Moscow's west, in a rescue operation that lasted more than 12 hours.
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