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GREELEY, COLO. -- Update 3:45 p.m. Thursday

FBI officials have confirmed that a body found in a drainage ditch in Greeley Wednesday is that of Kayleah Wilson, a 12-year-old girl who went missing in March.

Greeley police have scheduled a 4 p.m. press conference to "make an announcement regarding the case."

The cause of death has not been released.

Tune into FOX21 News at 6:30 p.m. and 9 p.m. for the latest details.

Information provided by KDVR-Denver.

Click on the camera icon to view the story as it aired on FOX21 News.

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Update

GREELEY, Colo. (AP) -- Greeley police have retrieved a body from an irrigation ditch, about a mile from the home of a missing sixth-grader.

There was no immediate indication of whether it was the body of Kayleah Wilson, who was last seen March 28 while walking to a friend's house for a birthday party.

Sgt. Joe Tymkowych says the body is too badly decomposed to determine if it is a male or female.

He says a worker checking the ditch for problems after heavy rain Tuesday found the body Wednesday morning.

It's unclear how long the body has been at that spot. Tymkowych says searchers had checked the ditch before while looking for Kayleah. He says investigators planned to use dental records and possibly DNA and hair fibers to identify the body.

(Copyright 2010 by The Associated Press. All Rights Reserved.)

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Original story

GREELEY, Colo. (AP) -- Greeley police have cordoned off an intersection in an area where a body was reported to have been found.

A police spokesman didn't return a phone message Wednesday, and there was no immediate indication whether the body could be that of missing sixth-grader Kayleah Wilson.

She was last seen March 28 while walking to a friend's house for a birthday party.

(Copyright 2010 by The Associated Press. All Rights Reserved.)