STANLEY, Iowa (KCRG-TV9) -- Police have released the names of the people involved in the crash.
Mitchel Lee Tyler, 67, of Waterloo is in serious condition at University of Iowa Hospitals after the accident.
The other driver of a motorcycle was Jerry Lee McNamee, 63, of Waterloo had minor injuries and was released.
The third driver of a motorcycle was Brian Wade Sampson, 56, of Waterloo and he had no injuries.
The accident is still under investigation.
The Fayette County Sheriff’s Office said three motorcycles collided Saturday afternoon during an annual motorcycle rally for two missing Evansdale cousins, whose bodies were discovered back in 2012.
It happened around 1:00 as the group approached Highway 3 and J Avenue near Stanley.
"Once deputies arrived they discovered that during a motorcycle rally traveling through the county, three motorcycles struck each other and crashed to the ground," said Fayette County dispatch in a news release. "One driver was air lifted to UI Hospitals in Iowa City and is listed in serious condition."
The release went on to say Mercy Oelwein Ambulance transported the other victims to Oelwein Hospital and no names are being released at this time.
The Fayette County Sheriff’s Office's traffic investigation team is looking into what caused the collision. Authorities said they'll release more details at a later date.
Ten-year-old Lyric Cook and 12-year-old Elizabeth Collins were last seen alive near Meyers Lake back in July of 2012. Five months later, hunters found their bodies near a wildlife park in Bremer County.