MINNEAPOLIS - Minneapolis Police say a 17-year-old man is being held in the fatal shootings last weekend of a baby and a young man on the city's southeast side.

The suspect was arrested and booked into the juvenile detention center early Wednesday morning. He is suspected of firing the shots that killed 7-month-old Jayden Eric Redden and 20-year-old Gustav Duane Christianson II. The two victims were found in the back seat of a vehicle Sunday by officers responding to a shots fired call at 11th Avenue South and 26th Street East.

Julia Johnson identified her 20-year-old brother, Gustav Christianson, as one of the victims. (Photo: Julia Johnson)

Julia Johnson told KARE 11 that Christianson was recently released from prison, was formerly affiliated with the Native Mob gang and was in a treatment program. On Sunday police said they believe Christianson was the intended target of the shooter.

The Hennepin County Attorney's Office is seeking an extension until later Thursday for making a charging decision. The county attorney’s office believes that if charges are brought, it is "highly likely" it will be in adult court.