The incident happened at Kipling station on July 7. Officers were called to the TTC line 2 station for an assault around 11:15am.
According to Toronto police, a man assaulted an 85-year-old woman and then ran away.
The woman was taken to the hospital to be treated for her injuries.
Police released images after the incident and announced Wednesday that they have identified a suspect.
Police said Kelon Peters, 35, of Toronto, is wanted for aggravated assault, fare fraud and a probation violation.
Police say Peters is considered violent and dangerous and anyone who spots him should contact police instead of approaching him.
