Alleged mastermind of photojournalist's murder arrested in Mexico

Mexican authorities have arrested an alleged drug trafficker accused of masterminding the murder of a photojournalist in the northern border city of Tijuana in January, the government said Thursday.

The killing of Margarito Martinez -- and the murder of a second journalist in Tijuana days later -- triggered international condemnation and calls for the government to step up protection of media workers.

The suspect, identified as "David N," was detained on Wednesday with two other people in the town of Apodaca in the northern state of Nuevo Leon, Deputy Security Minister Ricardo Mejia told reporters.