Published: Nov 11, 2010 9:21 PM EST
Updated: Nov 11, 2010 6:22 PM EST

TAMPA, Fla. (AP) - Publix officials will revamp their lineup of reusable grocery bags after a newspaper investigation found elevated levels of lead in the material of some bags.

The Tampa Tribune tested more than a dozen bags from major grocers, and found certain bags sold in Winn-Dixie and Publix stores had levels of lead that concerned health officials. Some bags had enough lead that they could be considered hazardous waste if residents put them in their household trash.

Publix officials stress their bags comply with current federal laws regarding lead content. The newspaper reported Thursday that Publix is asking suppliers to find ways to make bags with less lead. A message left with Winn-Dixie's corporate communications office was not immediately returned.

Lead is considered a toxin and can cause learning disabilities in children and fertility problems in adults.