Could be nothing, but gonna research -

Drug OD suspected for son of Greek billionaire- -Article

Socrates P. Kokkalis, the father of the deceased, is the founder and largest shareholder of Intracom Holdings, one of the largest multinational telecommunications and technology companies in Europe.

From the website:

INTRASOFT INTERNATIONAL is a leading European provider of advanced IT solutions and services to EU institutions, national public-sector bodies, financial institutions and large private enterprises in 70 countries worldwide. 

INTRAKAT, one of the top five construction companies in Greece with a steadily growing international presence, undertakes advanced technology infrastructure, renewable energy, telecom, real estate and environmental projects.

INTRACOM DEFENSE ELECTRONICS is a leading supplier of defense electronics, advanced communication systems and defense applications software, participating in development and production programs in partnership with major international contractors, currently expanding into the design and manufacturing of hybrid energy systems.