A murder-suicide took the lives of a man and woman Sunday afternoon in northeast Minneapolis, police reported.

About 3:30 p.m., officers from the Minneapolis Police Department responded to a 911 call about a person threatening someone with a gun at a house on the 2000 block of Polk Street NE.

The first officers on the scene couldn't contact anyone inside the home, so they set up a perimeter. More officers arrived, including members of the hostage negotiation team.

While the negotiation team tried to contact the residents, officers heard what they believed to be a gunshot coming from within the house.

Officers entered and found a man and woman, both dead.

From his apartment across the street, Dave Dykstra heard and watched the commotion, including hostage negotiators shouting through a bullhorn.

"It was just crazy," Dykstra said. "It was like, 'What is going on?'"

He said he watched police enter the older, white, single family home and quickly come back out. Dykstra said he heard three gunshots after that.

The neighborhood is mostly quiet, he said, and the police station is only a few houses away from the property where the murder-suicide occurred.

The Hennepin County medical examiner's office will release the names of those who died and the cause and nature of their deaths.

The police department isn't looking for suspects. The investigation will be led by the department's homicide unit.

Erin Adler