AUTHORITIES will not reveal what they uncovered during the search of a mosque following the killing of a NSW Police employee in Parramatta on Friday.
As Foreign Minister Julie Bishop on Sunday urged Australians to "take stock" of the challenges facing the nation, police remained tight-lipped about what they found when they executed a search warrant on Saturday evening.
Police killed teenager Farhad Jabar Khali Mohammad moments after he shot father-of-two Curtis Cheng who was leaving work about 4.30pm on Friday.
The 15-year-old is believed to have used a revolver in the killing of the well-respected accountant and 17-year police force employee.
The young man, believed to be of Iraq-Kurdish heritage, also fired at police.
It is believed police were looking for a backpack that may have carried Farhad's gun when they searched the mosque where the teenager occasionally visited.
"NSW Police yesterday (Saturday) executed a warrant," a police spokeswoman told APN Newsdesk on Sunday.
"The warrant was undertaken by arrangement with leadership at the mosque who provided full assistance to police at all times.
"There is no further comment."
Neil El-Kadomi said while Farhad visited the mosque "occasionally" the killing had nothing to do with anyone else at the venue.
"Because he was very quiet nobody noticed him," Mr El-Kadomi told the ABC.
"He came to the mosque to heal himself before he did the crime, which is wrong.
"The boy, he did it alone. He died and his motive died with him."
Ms Bishop told the ABC's Insiders program on Sunday morning that the murder of Mr Cheng was a "terrorist incident."
"When a 15-year-old boy can be so radicalised that he can carry out a politically motivated killing or an act of terrorism, then it's a time for the whole nation to take stock," Ms Bishop said.
"...it really does highlight the challenge that we have before us."
Prime Minister Malcolm Turnbull and New South Wales Premier Mike Baird met with police and the Muslim community on Saturday.
Ms Bishop said this meeting was a clear sign that the government was working to lower radicalisation of young people.
"We're certainly reaching out to the leaders of the Muslim community (And) working with the families at a grassroots local level," Ms Bishop said.
"It's the families that will be our front line of defence against radicalised young people.
"So we will be working very closely with them." - APN NEWSDESK
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