Competition authorities in Spain have said last summer’s heat wave, together with increased exports, contributed to higher food prices during the summer, but added they would continue to investigate.

Dramatic rises in the prices of fresh foods helped push consumer inflation up to 3.0% in August, its highest level in four months, reported Reuters.

“Prices fell significantly, back to their previous levels, once the heat wave finished,” Fernando Jimenez Latorre, director general of the Competition Defence Service, was quoted by Reuters as saying.

A competition investigation was launched in October into the reasons behind the sharp rise in fresh food prices. The competition authority said it was now focussing on food retailers.