Tears flowed as the family and friends of murdered Melbourne teenager Patrick Cronin's gathered at his local football club to mourn to a life taken too soon.  His parents Matt and Robyn, brother Lucas and sister Emma hugged well-wishers as they arrived before moving inside the clubhouse to address the community.  At the same time, police announced they had arrested the man they say is responsible for the teenager's death.  "He was the heart and soul of our family... Our hearts are just blown apart," his mum Robyn told the crowd.  The teenager, who was hit on Saturday night outside the Windy Mile pub in Diamond Creek, will be remembered with a minute's silence at all Northern Football League games this weekend.  Patrick, 19, played for the Lower Plenty Football Club with his brother, Lucas, on Saturday before going to the Windy Mile.  It's understood the Eltham teenager wasn't involved in a brawl outside the pub but was attempting to help a friend when he was struck about 11pm on Saturday.  He walked home but was rushed to hospital soon after where he remained in a critical condition until his family made the heartbreaking decision to switch off his life support on Monday.  The Northern Football League and Lower Plenty officials met on Tuesday and decided a minute's silence would be held before every game this weekend.  Players will also wear black armbands.  "The Northern Football League is deeply saddened by the tragic passing of Patrick Cronin," it said in a statement.  "The league offers its sincere condolences to Patrick's family and friends (and) the Lower Plenty Football Club."  The Windy Mile reopened on Tuesday but has cancelled all live entertainment for the week as a mark of respect.  Diamond Creek man Andrew William Lee, 33, has been charged with Patrick's murder and was remanded in custody to appear at the Melbourne Magistrates Court on Wednesday.
Police are trying to identify a man they believe could help their investigation into the death of a Melbourne teenager outside a pub on the weekend.