FRANCONIA TOWNSHIP, Pa. (CBS) – Montgomery County officials say a dispute that ended with a man dead at a Philadelphia area meat packing plant began with a relatively harmless prank.

According to police, on Feb. 17, 2015, the victim, 25-year-old Danny Vazquez, tried to pull a chair out from underneath the suspect, 32-year-old Peter Jok Atem, at the MOPAC Rendering Plant.

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After the prank, the Atem reportedly told Vazquez, “I’m going to get you for that.”

The next day, a witness told police he saw Atem involved in a physical altercation with the Vazquez, but that Vazquez was able to get away from the argument and return to work.

A little while later, the witness heard screaming and saw Atem stabbing Vazquez.

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After the stabbing, witnesses tried to get Vazquez help, but he collapsed outside the office and died.

Police at the scene say they found Atem hiding inside a shed with stab and slash wounds that appeared to be self-inflicted and transported him to Paoli Hospital, where he underwent surgery for those wounds.

Police also say they located a note near the scene that read, in part, “see you in hell. life for life.”

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Atem remains hospitalized and is now facing first-degree murder charges as well as related charges.