Mexico City’s La Jornada is reporting that the Federal District has had four consecutive days of bomb threats since last week’s discovery of a pipe bomb in Latin America’s tallest skyscraper, located in the Mexican capital.

Anonymous calls have been received by police alleging that bombs were located in various buildings on Mexico City’s Paseo de la Reforma, as well as in downtown’s emblematic Torre Latinoamericana. None of the threats have proven to be true, but some observers are warning that after the bombing of a Sears store in Oaxaca and the pipe bomb incident last week, things might get even worse.

Who’s behind the bombs is still technically a mystery, though most fingers are pointing towards the EPR, the rebel group that claimed responsibility for pipeline blasts earlier this year as well as the Oaxaca Sears bombing.

Via / La Jornada and Latin Business Chronicle