Police have made an arrest overnight in a triple homicide from Friday night as well as a double homicide from Saturday.
Investigators said the suspect is the boyfriend of one of the victims.
The weekend violence that left six people dead convinced Kansas City police to put extra officers on the streets.
Police found three people dead at a home on Lister Avenue near 24th Street.
Two of the three victims have been identified as 50-year-old Anthony Richardson and his wife, 53-year-old Mary Richardson.
KCTV5 has learned Anthony Richardson was a childhood friend of police chief Darryl Forté.
Police have not yet released the name of the third victim.
They say they are still working to notify her family.
Authorities have also not yet said how these three people died.
Wednesday morning, the Jackson County Prosecutor filed two counts of murder in the first-degree charges in connection with Saturday morning's double homicide in the 2500 block of Benton Boulevard.
Prosecutor Jean Peters Baker said Bronson Joyce, 19, of Kansas City faces those charges as well as three counts of armed criminal action and a first-degree assault charge.
A release from the prosecutor's office said witnesses told police that Joyce was inside the apartment when he shot and killed Claude Carson, 61, and Alphonso Nicholson, 42, and wounded a third person during a drug deal.
KCTV5 spoke to Nicholson's family who says they got an anonymous call about his death.
Another man said his cousin saw one man shot the two victims.
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