DENVER — A Denver man was convicted Friday of murdering his girlfriend, nearly 10 years after her body was discovered inside a Denver-bound Amtrak train.

Angelo Valentino Mantych, 43, was convicted by a jury of his peers on one count of first-degree murder after deliberation for killing 28-year-old Marina Placensia while on-board an Amtrak train that was headed to Denver from Wisconsin the morning of Sept. 1, 2016.

It took jurors about five hours of deliberation to reach the guilty verdict on Friday. Each was individually polled on their decision.

Mantych, who was in court Friday for the reading of the verdict, hanged his head as it was read. He was scheduled to be sentenced on Jan. 9.

The two sides delivered their closing arguments on Friday morning.

Prosecutors said Placensia took t

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