The chairman of the Parramatta mosque, where a teenager prayed before shooting dead a police employee, has said Muslims who reject Australian values should "get out".

In his first sermon since 15-year-old Farhad Jabar shot and killed Curtis Cheng outside the Parramatta police headquarters in western Sydney last week, Neil El-Kadomi told hundreds of worshippers gathered for Friday prayers: "If you don't like Australia, leave."

The prime minister, Malcolm Turnbull, was asked on Friday whether people who did not like Australia should leave. He said it was "not compulsory to live in Australia" and "if you find Australian values unpalatable, then there's a big wide world out there and people have got freedom of movement".

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