Tel Aviv: Relatives of Israeli billionaire Lev Leviev were arrested on Monday morning in connection with a massive diamond smuggling scheme.

Leviev’s son and brother were among six suspects arrested on suspicion of smuggling diamonds worth hundreds of millions of shekels to Israel. Also among the six was a veteran employee of one of Leviev’s factories in Russia, who returned to Israel six years ago and took advantage of his status as a returning resident to smuggle diamonds in the many suitcases he took with him, according to The Jerusalem Post’s Hebrew-language sister publication Maariv.

An Uzbek-born diamond magnate and Orthodox philanthropist who has been dubbed the “King of Diamonds,” Leviev moved to London from Israel in 2007 with his family.

The Mako news site reported that police will ask to investigate Leviev himself. His diamond company LLD said in a statement: “Mr. Leviev and the companies under his control act in accordance with the proper norms while adhering to the law. We hope that the matter will soon be clarified and the suspicions will prove to be baseless.”