 With that information, Minister Lara ordered the suspension of any flight that was seen as suspicious, dealing a heavy blow to the cartels' operations, as well as denouncing dirty money in different political parties and even in sport teams.The enforcement actions of Minister Lara against ringleaders such as Pablo Escobar Gaviria, Carlos Lehder, Gonzalo Rodríguez Gacha, the Ochoa brothers (Fabio, Jorge and Juan David Ochoa), all known as the Medellín Cartel, made him a target for assassination.Security protection for Minister Lara was strict under Colonel Ramírez and the DEA, who frustrated a first attempt at murder in Medellín which led to the arrest of American Joseph Harold Rosenthal, alias Edward John Burn, involved in money laundering associated to narcotics.