Investigators in Washington State said that they are unsure if a bullet that struck a woman in the head came from a shooting range near her property.

KATU reported that the Clark County Sheriff’s Office said it did not have any evidence that a bullet that hit Linda Sperling, 65, of Brush Prairie, came from the nearby gun range.

Sterling was hit in the head by a bullet on Jan. 26, but miraculously survived.

During the investigation, authorities interviewed Sterling as well as management at the range and found no definitive proof that the bullet actually came from someone firing shots at the range.

The sheriff’s office tested three different shell casings and could not find which hit Sterling. The office also said that while it could not determine if the bullet came from the Clark Rifles range it could not rule out the possibility that it may have. However, it will not pursue criminal charges.

“Investigators are unable to make any determination that the injuries were the result of criminal intent, recklessness or negligence at this time,” the sheriff’s office said in a news release. “Since there is no evidence of criminal activity this investigation is suspended.”

The Columbian reported that Sterling was gardening on her 5-acre property last month when a bullet entered and exited her scalp. She was treated and released from a local hospital, but said still suffers from a concussion, memory and vision problems and a constant headache.