A suspect was in custody and two weapons were seized, police said.
Debbie Toughill, director of a health club near the shooting site in North Philadelphia, said a woman ran into her business about 9:30 a.m. Friday. The woman told Toughill that a worker had walked into a staff meeting at the Traffic Signal & Sign Shop and started firing.
"She saw people down and saw blood and she started running in here, and I called the cops," said Toughill. "She was unhurt. She was upset, shaking, crying. All she knew is she wanted to get out of there."
The woman, who gave her name as Cathy, said she hid behind a chair during the gunfire, Toughill said. The woman later left with her husband.
Police said two people were dead and two were injured.
Two people were pronounced dead at Temple University Hospital. Temple spokeswoman Jennifer McGowan said a 44-year-old man was dead on arrival. She said a 53-year-old man died while being treated.
Another person, believed to be the gunman, was in critical condition.
Two others were being treated at Parkview Hospital. Herbert Oliver, 52, was in good condition with a gunshot in the right upper leg, said hospital spokeswoman Donna Butler. Lester Johnson, in his late 50s, suffered abrasions to his left leg and was in good condition, Butler said.
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