UPDATE: PA state police have released the names of the suspect and the victim in the homicide that occurred on Saturday morning.

State police reported one man was shot and another man was in custody.

Sunday, officials say 28-year-old Zackery McCoon, has been arrested for criminal homicide after shooting and killing his father 49-year-old Trevor McCoon. 

Zackery McCoon was arraigned on Saturday evening and committed with no bail.

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SULLIVAN TOWNSHIP, PA (WENY)--Pennsylvania state police out of Tioga County, PA in Mansfield are investigating a Saturday morning homicide.

According to state police, the incident took place at 9 am. Officials say a man reported he shot his estranged father, who entered his home and charged at him. Troopers from Mansfield were dispatched and arrived at the home within minutes. 

Troopers say they saw the suspect as he was exiting the residence. The suspect complied with all commands from the Troopers and was placed in custody.

Troopers provided aid to the victim and said due to the nature of the investigation and interest in maintaining the integrity of the investigation, the name of the victim and the suspect will not be released at this time.

This investigation is ongoing and no further details are available.