Search on for Wenatchee teen's killer

Search on for Wenatchee teen's killer »Play Video
Mackenzie Cowell
WENATCHEE, Wash. -- The search for the killer of a Wenatchee teen found dead over the weekend now spans three counties wide.

Thirty investigators, including FBI agents, working on the homicide case of Mackenzie Cowell finished canvassing multiple scenes on Monday in Chelan, Douglas and Grant counties.

Meantime, friends and classmates of Mackenzie Cowell are using their phones and the Internet to spread word of her death.

Text messages sent around Wenatchee High School beg for answers into 17-year-old Cowell.

"Mackenzie Cowell found dead this morning in the Columbia River. Pray that her killer is found," read one message.

"We don't know how she died, but send this to everyone so they can know what happened to Mackenzie Cowell," read another.

Cowell was last seen by surveillance cameras 3:30 p.m. Tuesday as she was leaving the Academy of Hair Design alone. The cameras didn't capture anyone suspicious in the parking lot, and investigators said Cowell didn't appear to be in a hurry.

Hours later, her car was found near Pitcher Canyon. On Saturday, passersby found her body near Crescent Bar on the shore of Columbia River.

Investigators have said they found some evidence at the scene; however, they said none of it points to a specific person. They are still interviewing friends and relatives.

Items were also taken from a home that sits just 30 yards away from Cowell's body, but the Chelan County sheriff would not categorize those items as evidence.

But investigators hope it will give them a few new clues to at least narrow down their search for a killer.

"We don't know where she was killed. We are hoping the autopsy and the crime scene investigation at the hospital tomorrow will lead us to some conclusions on that," said Gjesdal.

Cowell's family released a statement on Sunday saying, "The family knows now that she is safe and in heaven and not lost. The family is hanging in there."

Family and friends of the victim have set up a blog where visitors can post comments and condolences.

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KXLY-TV in Spokane contributed to this report.