A quiet morning gave way to a tragic scene along an Eagan cul-de-sac Sunday as police investigated what they described as the “suspicious death” of a 13-year-old boy.

Just after 11 a.m., officers and paramedics went to a house in the 1700 block of Silver Bell Circle on a report of a bleeding and unresponsive boy.

First-responders attempted lifesaving measures but could not revive the teen, authorities said.

Neighbors who had left their homes before the incident to go to church or to shop returned to find the small cul-de-sac filled with police cars, a neighbor said.

In a midafternoon news release, police offered few details other than to say the boy had been at home with his 15-year-old brother and 11-year-old sister, and that it had been the 15-year-old who called 911 to say that his brother was “bleeding from an unspecified wound.”

A neighbor who asked not to be identified said a person connected with the boy’s family told her the two brothers had been playing with a gun, and that the 13-year-old had been shot. “It was so sad to hear,” she said.

In audio captured by the website mnpoliceclips.com, however, first-responders were told by dispatchers that the boy slipped and fell on a knife.

Property records indicate that the family rented the home, which is among a group of seven just south of Silver Bell Road.

A woman who lives on the other side of the cul-de-sac said that she had gone to church and came home about 2 p.m. to the sight of police.

Told later that a boy had died, she could say only, “I am so sorry.”