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MADISON COUNTY, IOWA — One teenager was killed and three other teens were injured in a crash in Madison County early Sunday morning that authorities say likely involved alcohol.

According to an online crash report, a 2003 GMC Sierra was speeding in the 2400 block of 195th Trail – a gravel road northeast of Winterset – when the driver lost control, went into a ditch and hit a tree. The 17-year-old driver of the truck was killed. Three passengers – ages 15, 16 and 18 – were injured. No one in the vehicle was wearing a seatbelt. The Iowa State Patrol’s crash report reads in part: “alcohol is suspected.”

The name of the driver and the passengers in the vehicle have not been released at this time.