The robbery happened at 3:30 p.m. Monday in the 1200 block of Luzerne Street in the Juniata Park section of the city.
The victim, a 51-year-old woman, was beaten by three boys during the robbery. She said they used household items, including a plunger, and even threw a potted plant at her.
The woman, a widow, was described by police as having 'mental disabilities.'
She was found by neighbors cowering in the back yard.
She was taken to the hospital to be treated for her injuries and was back at home on Tuesday afternoon.
Captain John Gallagher says the trio made off with just $20 after rifling through the apartment.
Investigators tell Action News they are looking for at least two more suspects between the ages of 7 and 9.
Because of state law, if the other two boys are in fact under 10, they can't be charged in this crime.
Investigators say as soon as they identify them, they will be referred to the Department of Human Services.