CORRECTED-UPDATE 2-Guatemala arrests former presidential candidate on eve of UN-graft team exit

Guatemalan police arrested former presidential candidate Sandra Torres at her home on Monday on charges of violating campaign finance rules, just hours before the departure of a U.N. anti-corruption commission that shook the political class.A former first lady, the 63-year-old Torres finished second to President-elect Alejandro Giammattei last month in her third attempt to win the office.The fight against corruption has dominated Guatemala's political scene since the International Commission aga