Isak Andic died after falling more than 100 meters (328 ft) from a cliff while hiking with family members near the Mediterranean city of Barcelona.

His death was initially treated as an accident, but police in Catalonia later said it was being investigated as a possible homicide.

A family spokesperson confirmed Jonathan Andic was being questioned by investigators, but declined to provide details.

“The cooperation has been and will remain total,” the spokesperson said of Jonathan Andic, who police said was detained on Tuesday and remains in custody.

The spokesperson repeated that Jonathan Andic’s family was confident of his innocence. The court handling the case said last year that the investigation was not directed at any specific individual.

He is expected to be transferred to an investigating court to testify before a judge soon, a police spokesperson said, adding that the probe remains under seal.

Isak Andic, who was born in Istanbul, moved to Catalonia in the northeast of Spain in the 1960s and founded Mango in 1984. He built it into a global group seen as a rival to Zara.

At the time of his death, he was non-executive chairman of Mango with a net worth of US$4.5 billion according to Forbes.

The unlisted Barcelona-based company reported sales of 3.8 billion euros (US$4.41 billion) in 2025.

Jonathan Andic, who previously worked in Mango’s retail operations, is now vice-chairman of the board.

Mango declined to comment on the development.