She implored parliament members to follow her lead and speaking only the names of the victims rather than the man who took their lives.
"This incident highlights the importance of industry cooperation regarding the range of terrorists and violent extremists operating online", the grouping, which includes Facebook Inc, Alphabet Inc's Google and Twitter Inc, said of the attack.
Erdogan said, "If New Zealand fails to hold the attacker accountable, one way or another we will hold him to account".
Miss Ardern also warned social media companies they could face action, after the gunman broadcast his mass murder live on the internet.
"We can not simply sit back and accept these platforms exist and what is said on them is not the responsibility of the place where they are published - they are the publisher, not just the postman". "There can not be the case of all profit, no responsibility".
Most of the students spent hours locked down in their schools on Friday as police tried to determine if any other shooters were involved in the attacks.
Some of the pupils performed performed a haka for the Prime Minister, and principal Mark Wilson said she had shown "real leadership that captured the New Zealand character and spirit". They did come to us and bring this terrorist act with them.
"I agree that it is absolutely something that we need to acknowledge, and do what we can to prevent the notoriety that this individual seeks".
YouTube and Facebook say they have taken down millions of versions of the video but have been criticised because the clip can still be accessed.
Islamic tradition calls for the cleansing and burial of bodies as soon as possible after death, but this has been delayed because of the slow process of identification and forensic documentation.
"Wa alaikum salaam wa rahmatullahi wa barakatuh" she said -'May the peace, mercy, and blessings of Allah be with you too'.
"I will not change my opinion about New Zealand". They will meet again on Wednesday, the same day Ardern intends to return to Christchurch.
The New Zealand legal system does have a name suppression option under the Criminal Procedure Act 2011.
He has been charged with one count of murder and a judge said he is likely to face more charges over the shootings.
People visit a memorial site for victims of Friday's shooting, in front of the Masjid Al Noor mosque in Christchurch, New Zealand March 18, 2019. Streets near the hospital that had been closed for four days reopened to traffic as relatives and friends of the victims continued to stream in from around the world.
Thirty-one people remained hospitalized on Monday, including nine in critical condition.
Ardern also announced an inquiry into the country's intelligence services.