Ramiro Gonzalez, Argentina’s federal prosecutor, is leading a criminal investigation focused on executives from electricity firms Edenor and Edesur, as well as government officials from power regulator Enre and the federal Planning Ministry, over a series of blackouts between December and January.

Gonzalez is looking into energy sector subsidies received by Edenor and Edesur to determine whether charges of embezzlement or misappropriation of state funds apply, reports local newspaper La Nacion.

According to BNamericas, the aim of the investigationis to determine accountability for multiple power outages during a heat wave in the Greater Buenos Aires area.

To-date, no executives or officials have been named.

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