Minneapolis police are investigating after two people were killed in two separate shootings on Saturday.

Just before 1 a.m., police were called to 24th Street East and 18th Avenue South. There, officers found a 20-year-old man with life-threatening injuries.

The man was taken to Hennepin Healthcare, but later died from his injuries. Police believe that an argument led to the shooting. 

The shooter fled the scene and has not been arrested.

About 12 hours later, police responded to a shooting on the 3000 block of Grand Avenue South. Upon arrival, officers found a man in his 40s suffering from a life-threatening gunshot wound. Despite life-saving efforts, the man died at the scene.

Police say preliminary information indicates the victim had been standing outside when a vehicle stopped and an occupant stepped out before firing shots and leaving the area.

Around 4:20 p.m., Minneapolis police arrested the suspect, a man in his 20s, on the 4700 block of Cedar Avenue South. He was armed at the time of his arrest, police say.

Saturday's shooting on Grand Avenue South marks the third homicide in Minneapolis since Friday, when another man was shot and killed near Franklin Avenue and Lyndale Avenue.