A cleaning service employee has been sentenced to life in prison without parole for beating a co-worker to death last summer at a General Motors assembly plant near Detroit.

Astrit Gjon Bushi, 48, was sentenced Thursday after a jury convicted him in March of first-degree premeditated murder in the killing of Gregory Lanier Robertson, 49, of Pontiac, WDIV-TV reported.

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The two men were employed by a cleaning service contracted by GM and were working at the automaker's assembly plant in Oakland County’s Orion Township, north of Detroit, when the fatal assault occurred in August 2022.

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A Detroit-area cleaning service employee has been sentenced to life in prison for killing his co-worker in an Orion Township, Michigan, General Motors assembly plant.

Sheriff's deputies called to the plant at around 1:30 a.m. found Robertson unconscious and bleeding. He was pronounced dead at the scene despite life-saving efforts by deputies.

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Bushi was found standing near Robertson’s body. He was taken into custody and charged with murder.

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Oakland County Medical Examiner’s Office found that Robertson died of multiple blunt force injuries. Police have said they recovered the item used in the killing.