On Sunday the 14-07-13 at around 7.00 pm an 18-year-old male was threatened with a knife outside a supermarket on Murray Road in Preston.
Shortly afterwards a twenty-two-year-old man and a fifteen-year-old boy were held up at a nearby bus stop.
Police have since arrested a seventeen-year-old male.
If you have been a victim of an armed robbery or other crime call 1800 000 055 or (03) 9415 9492 or go to www.victimsofcrime.com.au or email support@victimsofcrime.com.au for assistance.