UPDATED: 3:30 p.m.
While traveling north on I-95, between Philadelphia International Airport and the Girard Point Bridge, Robinson's vehicle rammed another motorist, which caused a collision with Wilmington officers and a Pennsylvania state cruiser.
"We believe he's armed and dangerous," said Police Capt. Sekou Kinebrew. "We've notified our parks and rec centers. We're doing an area search, a grid search."
As far as police know, he is still on foot.
Robinson served prison time from 2015 to 2017 after pleading guilty to a gun charge and gang-related activity.
He's escaped the law in the past. Four years ago, he kicked out the window of a juvenile correction van in Wilmington and jumped out while it was moving.
The Pennsylvania State Police agency is leading the investigation for the car accident on I-95, while the Philadelphia Police Department is leading the investigation in the search for Robinson.