PHILADELPHIA (WPVI) -- SEPTA is investigating an alleged random attack on its Route 23 bus.
Photos show the woman who is accused of assaulting an 18-year-old female passenger.
It happened Tuesday morning along Germantown Avenue.
Transit authorities say the suspect smashed the victim in the forehead with a cellphone.
She was transported to the hospital for her injuries.
Anyone with information is asked to call SEPTA police.