When a police chase is hijacked, there is cause for alarm.  Recently, two (male and female) suspected armed robbers were leading police officers in chase when the radio broadcast was hijacked. The radio hijacker, impersonated a police officer, was able to thwart the chase.  Although the 21 year old male and 22 year old female were later captured in a nearby town, the radio hijacker is still on the run.  A method of  intrusion might have been broadcast signal intrusion.  Broadcast signal intrusion is easy to accomplish with a FM transmitter and antenna wire, specifically the Pi FM Radio Hack.  Once the signal is vulnerable, the individual can insert any and everything.  If the method was broadcast signal intrusion, the original signal was overpowered and additional sound effects are credible.  Additional unidentified noises were noticed during the hijacked radio broadcast.  The method of intrusion was never identified by Victoria’s Regional Police. Base networks shall be installed for digital radio according to several reports.

^{Resources:
Ashok, I. “Radio hacker cuts short police car chase attempting to catch armed robbers.” 02 September 2017,  http://www.ibtimes.co.uk/radio-hacker-cuts-short-police-car-chase-attempting-catch-armed-robbers-1637686. Accessed 06 September 2017.
GitHub, Inc. https://github.com/vz-risk/VCDB/issues/10097.  Accessed 06 September 2017.
(Ms. Smith) Smith, M. “Hacker hijacks police radio broadcast until cops call off car chase of armed robbers.” 03 September 2017, https://www.csoonline.com/article/3222094/hacking/hacker-hijacks-police-radio-broadcast-until-cops-call-off-car-chase-of-armed-robbers.html. Accessed 06 September 2017.
Schelle, C. “Victoria Police radio vulnerable: minister.” Australian Associated Press, 30 August 2017, http://www.news.com.au/national/breaking-news/police-radio-hijacked-during-vic-car-chase/news-story/5309f834b1abed93606f247d12a2c54b. Accessed 06 September 2017.}