Harry Martinez, 19, fell three stories to a concrete patio below.
"He has tubes. They have something on his head. He has broken bones on his face," his mother, Maria Torres, said.
Torres says her son is comatose and in critical condition at Elmhurst Hospital.
The incident happened in his family's Bushwick apartment building.
A group of bandits chased Harry up three flights of stairs. Harry tried to call 911, but it was too late.
His family doesn't know if he was pushed or if he slipped off the edge of the Irving Avenue building.
"The window was open. Maybe he got into a fight with him. He went to the top and they just threw him. I don't know if they threw him," his mother said.
Harry went out partying Saturday night. He got home early Sunday morning. His family believes the men followed him, knowing he had cash.
"I don't understand why they did this to him," Maria Martinez said.
Martinez is an economics major at York College in South Jamaica.
As his mother clutched his photo, she wondered if her son will come home, go back to school and pursue him dreams.
"I can talk to him, but since he has a lot of medication he can't talk to me. It's hard," she said.
Police were still searching for the suspects on Monday afternoon. Anyone with information is asked to call NYPD.