The defendant took his own life, authorities said.
Six adults were killed early Sunday morning when a defendant opened fire in a birthday party in Colorado Springs, Colorado, police said.
The defendant, who was supposedly the boyfriend of one of those victims, took his own life, according to authorities.
Officers responded to a 911 call at the Canterbury Mobile Home Park about 12:18 a.m. and discovered that the victims and suspect with gunshot wounds. It's unclear if the suspect was the one shot to the hospital.
Police said the unidentified defendant drove to the mobile home park while a birthday party was going on for one of the victims. Investigators said friends, family and children were all gathered when the defendant came in and allegedly opened fire.
"The children at the trailer were uninjured by the defendant and are now with relatives," the Colorado Springs Police Department said in a statement.
The investigation is continuing and authorities didn't immediately determine the shooter motives.
"My vow to this community as well as the families who have lost someone today, is that department will do everything we can to get you the answers that you deserve and be here for you with the unwavering assistance," Colorado Springs Police Chief Vince Niski stated in a statement.
Colorado Springs Mayor John Suthers called for inspiration as investigators hunted for clues behind the killings.
"Today we find ourselves mourning the loss of lives and praying solemnly for individuals who were injured and those who lost relatives in a senseless act of violence on Sunday afternoon," he said in a statement.
Gov. Jared Polis also offered his condolences and prayers to the victims and their families.
"The tragic shooting in Colorado Springs is catastrophic, especially as many of us are spending the afternoon observing the women in our lives that have left us the individuals we are now," he said in a statement.
Police asked anyone who has information relating to this crime to call the Colorado Springs Police Department at -LRB-719-RRB- 444-7000 or the department's tip line at (719) 634-STOP (7867).