Top Cop In Charge of Anti-Money Laundering Division Busted with Millions Hidden in Walls During Drug Raid on His Home

The arrests were made in connection to a drug bust that occurred last month, when officials seized 13 tonnes of cocaine arriving in the southern port of Algeciras from Guayaquil, Ecuador, in what has been called the largest-ever cocaine bust in Spain and "one of the largest seizures in the world" by police. (Credit: Jorge Guerrero/Getty Images)

A senior Spanish police officer has been arrested after an investigation into the nation's largest haul of cocaine ever led law enforcement to find €20m ($21m) hidden within the walls of his house.

Head of the fraud and anti-money laundering division of the Spanish police force in Madrid, Óscar Sánchez Gil was arrested last week. His partner, who is also a police officer in Madrid, was also arrested but has not been named by authorities. A total of 15 people were arrested in connection with the bust, reported AML Intelligence.