Updated

A murder suspect conversed with his victim moments before fatally shot him Sunday outside a Detroit gas station in what police described as a "random execution for no reason."

The killing occurred around 7:30 p.m. when the suspect gave the victim, who FOX affiliate WJBK-TV reported was a panhandler, some money before walking away. 

The shooter then walked back to the victim and shot him once and fled, police said. 

A man killed another outside a Detroit gas station this week in what authorities called a "random execution for no reason." (Detroit Police Department )

The victim was pronounced dead at the scene. Authorities have not disclosed a motive for the killing. 

"A lot of our homicides are people that know each other, maybe domestic incidents, but in this case, it just seems like a random execution for no reason and it's highly concerning for us," Detroit Police Capt. James McGinnis told the news outlet. 

The station said the victim was a man in his 50s who frequently hung out near the gas station. 

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The suspected shooter is described as White, standing five feet, nine inches tall.