Hungarian police detain brother of ex-PM Viktor Orban

• Aron Orban, brother of former Hungarian Prime Minister Viktor Orban, has been detained.
• The detention is part of a widening probe into alleged corruption during Orban's 16-year rule.
• Hungarian authorities have reportedly raided properties linked to Aron Orban's business associates.
• Prime Minister Peter Magyar, who won a landslide election in April, has promised to investigate corruption during Orban's tenure.
• The investigation follows Magyar's election victory, which ended Orban's 16 years in power.