This 26 March 2019 German language video says about itself (translated):
The Christchurch assassin donated money to the spokesman for the Austrian identitarian movement.
Translated from Dutch NOS TV today:
In the investigation into the attack in Christchurch city in New Zealand, police raided a house in Austria. The search was at the house of Martin Sellner, leader of the right-nationalist Identitäre Bewegung Österreichs (IBÖ).
The Public Prosecution Service in Austria does not want to provide an explanation, but according to Sellner himself it has to do with a gift to his movement. The donation was by the 28-year-old right-wing extremist who is detained for shooting 50 mosque visitors in Christchurch this month. …
The money is … “an excessively high amount”. According to [Sellner], electronic devices were seized during the house search in Vienna.
The IBÖ of 30-year-old Sellner objects, eg, against what the movement calls “uncontrolled mass immigration” and is committed to preserving national identity. According to Austrian media, the suspect of the New Zealand massacre is known to have been in Austria last fall.
NZ SHOOTER HAD FINANCIAL LINK TO FAR RIGHT Austrian Chancellor Sebastian Kurz on Wednesday said there was a financial link between the man who killed 50 people in mass shootings at mosques in Christchurch, New Zealand, and the far-right Identitarian Movement in Austria. Martin Sellner, head of the Identitarian Movement — which says it wants to preserve Europe’s identity — received 1,500 euros ($1,690) in early 2018 from a donor with the same name as the man charged with murder following the Christchurch attack. [Reuters]