Australian Muslims are being urged to be aware of the possibility of a local backlash after the deadly terrorist attack in London this week.

British soldier Lee Rigby, a 25-year-old Afghan war veteran, was killed near the Royal Artillery Barracks in Woolwich, south-east London, on Wednesday.His family have remembered him as a devoted father and loving husband.Muslim community leaders say they fear Australian Muslims could be targetted in reprisal for the incident.The Australian Muslim Youth Network has sent text messages and emails warning Muslims to avoid arguments about their faith and steer clear of anti-Islamic protests planned for some Australian cities."Some people may harm innocent Muslims in return, so be cautious," the message reads.