New details are emerging about the attack of a 23-year-old mother on an Alpharetta walking trail Tuesday through the 911 call she made to police.

“I’m at Wills Park,” the woman told dispatchers just before noon that day. “I was walking on the trail and he came up behind me with a knife and he tried to take me back into the barn area.  He was going to sexually assault me.”

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The victim, whose name we are not reporting, told officers she had passed the suspect just moments earlier and exchanged greetings.

“He ended up following me and coming up back behind me,” she said in the call obtained by Channel 2’s Mike Petchenik.

Hear the frantic 911 call as she describes how she got away, on Channel 2 Action News at 4 p.m.