A woman in Irving, Texas, remains hospitalized after being stabbed with a screwdriver while working out at her local gym.
The incident happened Tuesday morning at a 24 Hour Fitness. The 49-year-old victim was on an elliptical machine when she was allegedly attacked by a man later identified as Phillip Roberts, 32.
Authorities said Roberts allegedly went up to the woman at random and stabbed her three times in the neck and the back, puncturing a lung in the process, according to KHOU TV. Doctors said the injuries are not life-threatening.
Witnesses said there was no conversation between Roberts and his victim.
"She was on an elliptical, he came and the next thing you know he started swinging at her," an employee told the 911 operator after the attack. "A bunch of members are saying that he's been walking around shouting about Satan."
Records show there was a 911 call made from the gym before the attack from a different woman reporting a man -- who fit Roberts' description -- acting suspiciously.
"He's inside the gym walking around with a top coat on and a suitcase, and he's kinda like, uh, looking at people crazy. And we come every morning at 4 and he's just random," the caller said, according to WFAA. The woman emphasized the man wasn't working out, just looking at people with a "crazy stare."
An officer came to the gym only to be told by the staff everything was fine and that Roberts was a member.
The attack happened after the officer left the gym.
Witnesses tackled the suspect and held him down until police could return to the gym. Officers found a screwdriver under Roberts' body when they rolled him over.
Roberts was arrested on charges of aggravated assault with a deadly weapon. He remains in the Irving Jail on $100,000 bail.
Authorities said Roberts has a Tennessee driver's license but no known address, according to the Fort Worth Star-Telegram.