Seattle ? Two days after an insane killer escaped from a field trip organized by his mental hospital, the union that represents mental hospital workers said it had become concerned about the type of patients allowed to participate in such outings.

Police continued to search Saturday for 47-year-old Phillip Arnold Paul, who walked away from the Spokane County Fair during an outing Thursday with 30 other Eastern State Hospital patients.

“The manhunt continues,” said Spokane County sheriff’s spokesman Dave Reagan. “We truly suspect he is headed for Sunnyside. His parents live there.”

Paul had been committed after he was acquitted by reason of insanity in the 1987 slaying of an elderly woman, whose body he soaked in gasoline to throw off search dogs. Paul buried the woman’s remains in her flower garden.