Switzerland's Zurich Insurance Group says former chief executive Martin Senn, who ran the company for six years until last December, has killed himself.

The company said in a brief statement Monday that "his family informed us that Martin took his life last Friday." It said it would not be making any further comment.

Senn, a Swiss national, was 59. He departed as CEO at the end of last year, saying that there had been "some setbacks in recent months" but the company was in good shape.

Three years ago, Zurich's then chief financial officer, Pierre Wauthier, killed himself. Two independent probes directed by Swiss regulators found no indication that he had been subject to undue pressure by decision-makers at the company.