Colombian police arrest suspect in Peru mine workers' killingsA lawyer for Mr Diaz has denied his involvement in the killings. Miguel Antonio Rodríguez Díaz, whose alias is "Cuchillo" (knife), was arrested in the city of Medellin in a joint operation between the two countries and Interpol, according to Peru's interior ministry and Colombian police. Police in Colombia have arrested a man suspected of being involved in the killing of 13 kidnapped workers at a gold mine in neighbouring Peru. Colombian police chief Carlos Triana said Mr Diaz was located with the support of the US Immigration and Customs Enforcement agency and was subject to an Interpol red notice. Peru's interior ministry said they expected Mr Diaz to be extradited to Peru in the coming days.