Unrest continued in Milwaukee Sunday for a second night after the fatal police shooting of 23-year-old Sylville Smith over the weekend.

During protests from late Sunday through early Monday, shots rang out and protesters threw rocks and other items. There were multiple arrests. 

One person was shot and a police officer was hurt after a rock hit a police vehicle's windshield. The 18-year-old shooting victim and the police officer were taken to the hospital for treatment of their injuries. 

It was the second night of unrest in Milwaukee. Protesters burned cars and property on Saturday night.

The violence prompted the governor to activate the Wisconsin National Guard on Sunday. The Milwaukee police chief can now request the guard's deployment if help is needed.

The uproar in Milwaukee comes after police fatally shot Smith on Saturday. Smith, an African-American male, was shot in the arm and chest as he fled from police with another suspect during a traffic stop.

Smith was reportedly armed with a stolen handgun. An officer shot at Smith after he refused orders to drop the gun, according to authorities. 

The 24-year-old officer is black and has been with the Milwaukee Police Department for six years. The officer, who is on administrative duty during the shooting's investigation, was wearing a body camera during the incident. It is not yet known when the footage will be released.