Counter-terrorism police have searched two NSW homes linked to the suspected Christchurch gunman but didn't find anything that posed a threat to the public, New Zealand's police commissioner says.
Information garnered from the searches is being sent across the Tasman to help local police investigating the alleged mosque shootings by Australian white supremacist Brenton Tarrant.
Officers from the NSW Joint Counter Terrorism Team searched a property on Monday in Sandy Beach, near Coffs Harbour, where Tarrant's sister is believed to live.
Plain-clothed detectives entered the home, which had its windows and doors covered in black plastic sheets, to look for evidence.
Another search was carried out a short time later at a second home in Lawrence near Maclean.
It's understood Tarrant's mother works in that region.
New Zealand Police Commissioner Mike Bush said Australian police didn't discover "any matters that would threaten their public".
Information from the NSW searches would be sent to New Zealand "and will form part of the investigation", he added.
Alleged shooter's visits to Greece, Bulgaria, Turkey probed
Meanwhile, officials in Greece, Bulgaria and Turkey are investigating the visits made by alleged shooter Brenton Tarrant.
Tarrant visited the Greek island of Crete, and Santorini -- a nearby island in the southern Aegean -- in March 2016, according to a statement from the ministry of citizen protection.
He also had two stop-overs a Greek airport in November and December respectively.
A Greek police source said investigations into Tarrant's movements were ongoing.
He flew in from the Turkish city of Istanbul on March 20, 2016 and stayed a few days on the islands.
Tarrant has been charged in New Zealand with murder for having allegedly carried out the shootings at two mosques in Christchurch during Friday prayers, killing 50 people.
Family of alleged shooter say he 'completely changed' after travel
His grandmother, Marie Fitzgerald, told Australia's Channel Nine network on Sunday that she believed he had "changed completely" after his travels abroad.
The authorities in Bulgaria announced on Friday they had opened an investigation into a visit by Tarrant to their country on November 9 to 15 last year.
Bulgaria's chief prosecutor Sotir Tsatsarov said a man believed to be Tarrant had also travelled by bus across Serbia, Croatia, Montenegro and Bosnia and Herzegovina from December 28-30 in 2016.
Turkey opened its own inquiry on Friday after reports that Tarrant had made several visits there and stayed for a long period in the country," a Turkish official said.
