Background and reactions
Magyar, a pro-EU conservative, won a landslide election victory in April to end 16 years in power for Orban, promising to investigate alleged corruption and abuse of office during his rival’s rule.
Former premier Orban called the detention a “dirty game,” accusing the government of trying to eliminate its political opponents.
“I am the target; my brother is merely a tool,” he wrote on Facebook.
Like other members of the Orban family, Aron Orban built several successful business ventures during his brother’s time in power.
Last year, investigative journalists linked one of his companies to an alleged visa facilitation scheme that offered preferential access to Hungarian work visas for foreigners.
The joint operation was carried out by the National Bureau of Investigation (NNI) and the National Asset Recovery and Protection Agency (NVVH), an anti-graft body with sweeping powers established as part of Magyar’s accountability drive.
In September, NVVH took over four investigations, including one related to influence-peddling that could involve Aron Orban, according to local media.
That case centres on an illicit group that allegedly promised to bypass standard administrative procedures to grant visas to foreign nationals in exchange for money.