Spanish police have arrested a former Argentine police officer wanted in connection with kidnappings and torture during Argentina's so-called "dirty war."

Police said Thursday they arrested Ricardo Taddei in Madrid Wednesday on an international warrant. Taddei is accused of taking part in 161 cases of kidnapping and torture during the country's seven-year military dictatorship that ended in 1983.

At least 9,000 people were tortured or disappeared during that time. Some human rights organizations place the estimate higher, at about 30,000.

Spanish authorities must decide whether to extradite Taddei to Argentina or try him in Spain, where he has lived since 1985. Last year, Spain's High Court sentenced  former Argentine navy captain Adolfo Scilingo to more than 600 years in prison for crimes committed during the dirty war.

Some information for this report was provided by AFP, AP and Reuters.