Germán Zucarelli, 47, and his aunt Ana Russo, 75, were shot dead in Lanús. A former commissioner of the Buenos Aires Police was arrested this Thursday as accused of the double crime.

The arrest was carried out by agents of the Departmental Investigation Delegation (DDI) Lomas de Zamora. The detainee was identified as Adrián Brulc, former departmental head of Almirante Brown who has a history of money laundering.