May 6 (Reuters) - Colombia's majority state-owned oil

producer Ecopetrol reported on Tuesday a 22% net profit

slump in the first quarter to reach 3.13 trillion Colombian

pesos (around $728 million), compared to the year-ago period.

The energy company's total sales for the three-month period

came in at 31.37 trillion pesos.

($1 = 4,297.0000 Colombian pesos)