Three people, including a baby, were killed in a shooting Sunday night at an annual festival and carnival held in West Valley City, Utah, during a dispute between two groups of people.

Police were already on scene at the festival when they noticed tensions rising between two groups there. They walked over to de-escalate the situation when a 16-year-old man pulled out a gun and started firing.

Three people have been killed and two others injured in a shooting at WestFest carnival in Utah on Sunday, West Valley City Police said.

Police in Utah say three people, including an 8-month-old infant, were fatally shot at a carnival after two groups got into an argument.

Several people were shot in a mass shooting incident at WestFest, an annual festival in Utah's West Valley City. The festival was underway in Centennial Park.

A crazed gunman was taken into custody Saturday night after allegedly opening fire on thousands of protesters during a "No Kings" march, which left one person critically injured, Utah police said.

After a targeted shooting killed a former house speaker and her husband in Minnesota on Saturday, Utah leaders are speaking out.