Five children and a man were killed and a woman was seriously injured when they were shot at a home in Muskogee, Okla., early Tuesday, the police said.
Officers arrested a man at the scene. A police spokeswoman later identified him as Jarron Deajon Pridgeon, 25, a brother of one of the victims.
The police said they believed that the victims were related and that the shootings were not random.
The police responded at 1:30 a.m. to a call about the shooting of several people at a house on Indiana Street in Muskogee, a city of about 40,000 people 50 miles southeast of Tulsa.
When they arrived, they found the man holding a firearm, Johnny Teehee, the chief of police, said in a statement.
An officer fired one shot with a rifle, missing the man as he ran from the scene. The police chased and caught him, Chief Teehee said, and took him to the county jail.
When officers went inside the home, they found one man and four small children who were dead, Chief Teehee said. Another child was taken to a Tulsa hospital but died, and a woman was taken to a hospital with “life-threatening injuries,” the police said.
Officer Lynn Hamlin, a police spokeswoman, later identified the victims as the children of Brittany Anderson. They are Jalaiya, 2; Jaidus, 3; Harmony 5; Neveah, 6; and Quedynce, 9. The man found dead at the scene was identified as Javarion Lee, 24, the brother of the shooting suspect, Officer Hamlin said.
“We do believe that it’s a domestic event,” Mayor Marlon J. Coleman said in an interview. He said he anticipated that in the coming days the police would learn more about the connections between the victims and the gunman and “why he went down this terrible path.”
Mr. Coleman called the shootings “a tragedy of epic proportions.”
“We’re very early in the investigation,” Officer Hamlin said, describing the scene as “terrible.”
“We’re not used to this at all,” she said. “We just don’t have details yet of the why or what happened other than we have five small children who are deceased and one male.”