A line stretched around the block to honor State Representative Melissa Hortman, her husband and their dog, who were killed in an attack that officials have called a political assassination.
The man is accused of killing State Representative Melissa Hortman and her husband, Mark, as well as wounding another Democratic lawmaker and his wife.
Attorney General Keith Ellison of Minnesota signaled that state prosecutors would seek an indictment upgrading their top charges in the case to first-degree murder.
It was not immediately clear who was targeted in the Saturday morning shootings in Champlin and Brooklyn Park, Minn. The police said the gunman may be wearing body armor and impersonating an officer.