By Sofia MenchuGUATEMALA CITY (Reuters) - Guatemala's attorney general, a steadfast opponent of President-elect Bernardo Arevalo, has crafted a complex strategy to weaken his mandate or prevent him from taking office, according to five sources with knowledge of the prosecutor's thinking. At the center is Attorney General Maria Consuelo Porras, who protesters blame for attempting to prevent Arevalo from taking office on Jan. 14. Anti-graft campaigner Arevalo won a shock landslide victory in August but has received a backlash from the political establishment. Luis Almagro, head of the Organization of American States (OAS), has said the actions of the attorney general's office had set "a shameful example." Blocking Arevalo from taking office would throw Guatemala into deeper turmoil, said Tamara Taraciuk, Rule of Law program director at the Inter-American Dialogue think-tank.

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Persons: Bernardo Arevalo, Maria Consuelo Porras, Arevalo, Alejandro Giammattei, Porras, Porras's, Luis Almagro, Arevalo's, Jose Carlos Sanabria, Tamara Taraciuk, Sofia Menchu, Cassandra Garrison, Stephen Eisenhammer, Rod Nickel Organizations: Sofia Menchu, Sofia Menchu GUATEMALA CITY, Semilla, Prosecutors, Organization of American States, U.S . State Department, Inter Locations: Sofia, Sofia Menchu GUATEMALA, Guatemala, United States, Semilla's