Indian businessman Pramod Mittal has been detained in Bosnia on suspicion of fraud and abuse of power.
The 62-year-old is the younger brother of steel magnate Lakshmi Mittal.
The case is related to the running of a coking plant in the northeastern town of Lukavac, which Pramod has co-managed since 2003. It has 1,000 employees.
Two other company officials have also been arrested.
Reports suggest the suspects had embezzled at least 2.5 million euros (AED 10.2 million)
If found guilty, they could be jailed for up to 45 years.
Iran's supreme leader, in first remarks, vows to keep strait closed
Four Bahrainis arrested for spying for Iranian Guard
First train to Pyongyang in six years leaves Beijing as neighbours revive link
Six vessels attacked in Gulf, Strait of Hormuz
IEA announces record oil stockpile release over Iran war supply disruptions
UN Security Council adopts resolution condemning Iran attacks on Gulf states
Oman works to contain fire at Salalah port after drones strike
Strike hits Beirut apartment block as Israel presses attacks
