ST PETER —
Investigators said Ewing allegedly had other plans. He had withdrawn all his money from a bank account and packed a bag with food, clothing and other provisions. The bag wasn’t checked when he left the hospital.
Ewing and his mother had stopped at a store to buy supplies for the picnic, including barbecue tongs. He used a seat from a bicycle to beat Olson as soon as they arrived at the park, according to the criminal complaint. He then allegedly attempted to kill Olson by stabbing her in the eyes with the tongs.
When the tongs started to bend, he grabbed a steak knife from the picnic supplies and started stabbing his mother in her car as witnesses watched, the complaint said. Ewing allegedly stabbed Olson more than 20 times. She was critically wounded but survived and attended the hearing in January.
Ewing beat his sister to death about 15 years ago. He was sent to the security hospital in 1998 after he was found not guilty by reason of mental illness.