LONGTON, Kan. (KAKE) - Authorities say a man is accused of killing two people before he was found dead in a southeast Kansas home during a standoff with law enforcement. 

The Elk County Sheriff's office received a 911 call at around 12:10 a.m. Thursday. The Kansas Bureau of Investigation said the caller reported a man had shot two other men at a home on West 5th Street in Longton. The KBI was called to assist a short time later. 

According to a news release from KBI spokesperson Melissa Underwood, 55-year-old Dewayne Smith, 57-year-old Robert S. Stricker and three other men were at an outdoor gathering at a home when 41-year-old Lyle Miller arrived. 

"After a short time, Miller pulled a pistol from his waist and shot Smith and the 57-year-old man at close range," the release said. "Miller then fled the area..."

Smith and Stricker were pronounced dead at the scene. Both were from Longton.

Deputies determined Miller, also of Longton, entered a home in the 100 block of West 5th Street, and law enforcement surrounded the home. The KBI said frequent announcements were made in an effort to convince Miller to exit the home. He did not respond. 

Then at 5:50 a.m., the KBI said a robot was sent inside the house and located what appeared to be a man dead in the attic. A tactical team entered the house and confirmed Miller was dead of an apparent self-inflicted gunshot wound. 

The release did not elaborate on the relationship between Miller and the victims and offered no motive for the killings. 

Agencies assisting the KBI and Elk County include the Kansas Highway Patrol, Coffeyville police, Elk and Montgomery county EMS, and sheriff's offices Montgomery and Chautauqua counties.