SIOUX FALLS, S.D. (KSFY) - UPDATE:
Police in Sioux Falls say a fatal stabbing over the weekend began as an altercation over a "shared romantic relationship."
According to Lt. Mike Colwill, the 26-year-old unidentified victim and 24-year-old Franklin Aguilar-Romero -- who was earlier identified as Franklin Ishin-Serrano -- went to a 17-year-old boy's apartment in the 1900 block of W. 42 St. Saturday night.
The altercation ensued inside the apartment near 42nd Street and Willow Avenue and the victim was stabbed in the chest. He later died from his injuries at another apartment about a half-block away.
The 17-year-old boy also received several stab wounds during the incident and was taken to a hospital. He is expected to survive.
Colwill said Aguilar-Romero is the brother of the deceased.
Authorities found three "edged weapons" at the scene and believe each person involved had one.
Aguilar-Romero has been arrested on attempted first degree murder and aggravated assault.
Alcohol is believed to be a factor in the incident, according to police.
Authorities are expected to release new details about a deadly weekend stabbing in Sioux Falls.
Police say they will release more details Monday morning at their daily media briefing at 10:30 a.m.
The stabbing occurred Saturday night at an apartment complex near 42nd Street and S. Willow Avenue.
Police say a 26-year-old man was stabbed and later died at a hospital from his injuries.
Franklin Roberto Ishin-Serrano, 24, of Sioux Falls, was arrested and charged with 1st degree murder and aggravated assault.
One person is dead and another is hurt and behind bars after a stabbing in Sioux Falls Saturday night.