"His ‘friends’, and I use that term loosely, ran rather than staying and helping him," the police chief said.
Sirens can be heard outside John F. Germany library.
Following the apprehension of the suspect, Troopers discovered an AR-15 and a 9mm handgun inside the purple Challenger.
The gunman, who allegedly fatally shot Castellanos, also died at the bar.
The shooter was also fatally wounded in the exchange of gunfire.
He was the only occupant in the vehicle when officers arrived.
Authorities have not yet confirmed if any suspects have been apprehended.
According to HCSO, the deputy struck by the vehicle is expected to recover.
Police were still searching for the shooters early Monday morning.
Additionally, 19-year-old Rumariya Union is charged as an accessory after the fact.