 The twin sisters made a pact to commit suicide together in Colorado on the last day before one of them would be required to return to home to Australia. The 29-year-olds each put a 22-caliber pistol to her head and pulled the triggers simultaneously at the Family Shooting Center at Cherry Creek State Park Monday afternoon. "We asked that question several times, and each time she declined to answer," said Capt. Arapahoe County Sheriff’s Office said in a statement: 
 
 Based on the physical evidence collected, the surviving sister’s statement, and video surveillance footage from the shooting center the [the sheriff's department] believes that this incident was indeed a suicide and attempted suicide. The surviving twin remains in serious but stable condition at Swedish Medical Center in Englewood. The incident marked at least the seventh suicide involving rented guns at U.S. shooting ranges this year, and the third at the Family Shooting Center since 2004.
– The 29-year-old Australian twins shot at a firing range in Colorado meant to kill each other in a suicide pact, sheriff's officials said. Witnesses say the twins were shooting and chatting for about 90 minutes when they suddenly fell to the floor of the booth they occupied. Both had gunshot wounds to the head. One died, and the other is hospitalized but was able to speak with authorities today. "Based on the physical evidence collected, the surviving sister's statements, and video surveillance footage from the shooting center, the Arapahoe County Sheriff's Office believes that this incident was indeed a suicide and attempted suicide," said a statement. More details here or at the Denver Post.