A former Enron Corp. vice president of investor relations testified Thursday that in the months before the company failed in late 2001, she witnessed behavior by top company executives that concerned her but didn’t think crimes were being committed.

“I observed events that I thought were wrong, so I did make a conclusion. I didn’t make a conclusion that it was legal or illegal,” Paula Rieker said under cross-examination in the fraud and conspiracy trial of company founder Kenneth Lay and former Chief Executive Jeffrey Skilling.