Prior to Saturday, Belcher's name had never come up with police, nor had officers ever been called to the residence where the first shooting occurred. But later they learned the football player and his late girlfriend "had been arguing," including "before the shooting occurred," said Snapp.

Police arrived Saturday morning to find Perkins, who is originally from Texas, gravely wounded. Snapp said she was transported to a nearby hospital and "died a short time later."

Sometime after that, Belcher drove about five miles northwest, to Arrowhead Stadium. He was armed, but never pointed the gun at anyone else -- instead thanking coaches for what they'd done for him, officials told CNN affiliate KCTV.

"The coaches said when he pulled up, they were never in danger. He never threatened them or anything," Snapp said.

"He talked for a little bit, and then he shot himself."

That gunshot ended Saturday's saga. It left the baby -- who was inside the Kansas City home, but in another room, when her mother was shot -- without a surviving parent, and she is now with relatives, Snapp said.

The area around the stadium and the Chiefs' abutting practice facility shut down for about an hour after the second shooting.

But it should be packed Sunday afternoon. The Chiefs, who were struggling mightily before this and sported a 1-10 record, will play the Carolina Panthers, as scheduled, the NFL announced.

Kansas City's mayor said Saturday he hadn't given much thought over whether he felt the game should be canceled or go on. But he has no doubts where members of the Chiefs' organization stand.

"They think there should be a game tomorrow," James said. "I think that they believe there is an obligation to the people of this city, the fans of the team, the fans of the other team to proceed and go forward."