A member of the transport police subdued the 25-year-old suspect helped by a member of the public.
Authorities say Arroyo and her partner, another EMT, were on their way to a call when they were alerted that someone was riding on the back bumper of their ambulance at around 7 p.m. Police said in a statement that Gonzalez reversed the ambulance into Arroyo, knocking her over, before driving over her with the vehicle. Gonzalez, in turn, got into the driver's side.
The EMTs tried to stop him, grabbing at the sides of the ambulance, but he threw the vehicle into reverse, fatally striking Arroyo and injuring Williams.
The hijacker drove over a sidewalk and crashed the ambulance into cars parked along the street. The man attempted to flee on foot but was apprehended by an on-duty officer with the Metropolitan Transportation Authority who was on patrol, according to police.
A second EMT sustained minor injuries struggling with the suspect, local media reported.
Gonzalez told News 12 that he is innocent.
Colleagues of an emergency medical technician run over by her own ambulance are remembering their colleague as a warmhearted professional who did her job with grace.
"It's a tough moment for all, but it's a moment where we honor those who serve us and protect us", Mayor Bill de Blasio said at the news conference.
Video from the chaotic scene shows the driver motionless on the ground as her partner leans over her, crying and yelling, "My partner!" They do crucial work, they save lives.
Arroyo was a 14-year fire department veteran.
Jose Gonzalez was arrested on March 16, 2017, after police say he stole an ambulance in the Bronx and fatally struck an EMT. "Tonight's tragedy in the Bronx is terrible", he said. "My deepest sympathies to the family". The man was known to the police because they have had numerous encounters with him as an emotionally disturbed person, they said. He is expected to be in court on Friday.